The _______has been a standard maneuver carried out by all ships as an indication of the efficiency of the rudder.

The old paper mill has been ________ to make way for a new shopping centre.

John isn’t a diligent student, for it is the third time he has been late, ____?

Steady progress has been made _____ the biology and clinical consequences of HHV-6 infection whereas the effect of HHV-7 infection remains a neglected topic.

That rich man has been dead for a long time but his ______ is still not known to the public.

The result has been a ________ endless stream of synthetic insecticides……they differ sharply from the simpler prewar days.

There has not been a great response to the slate, _________?

These crops are extremely ______ to climate change, which has been a tricky problem for the local farmers.

There has been a __________ (reduce) in the amount of steel imported toBritainin 2016.

The nurse _____ on a night shift for several weeks. A. is working B. works C. worked D. has been working

It has been quite a long time ______ the two companies established a business relationship.

Until a firm agreement has been reached, I am not _________ to accepting the offer.

There has been a collision ______ a number of cars on the main road to town.

________ the meeting has not been discussed yet ． A ． Why to hold B ． Where to C ． When to hold D ． Which to

The companys______use of energy has saved much expense and has been a model for many other businesses.

The consolidation of the crumbling walls and towers has been carried out in ______ with a program agreed with by the Department of the Environment.

It has been estimated that the earth’s surface temperature has increased ________ one quarter to three quarters of a degree since 1805.

In recent years special attention has been paid __________ developing the students' productive skills. A．over B. to C. on D. in

It has been estimated that the earth's surface temperature has increased ______ one quarter to three fourths of a degree since 1850.

A huge amount of environmental damage has been brought_____by the destruction of the rainforests.

The World Cup has been the______of this month's events; a large number of soccer fans around the world focus their attention on the little "ball".

A strong police force has been placed between the two _______ groups in the village to

Tom has been suffering from lung cancer for half a year, so the doctor suggests that Tom _________ an operation as soon as possible（）

___ I shall travel around the U.S. is a question that has been pondered for a long t

For those involved, the scandal has been a very________（pain）experience