The ship is sailing ________ great speed to get to the port before the storm arrives．

with

in

at

by

I hear ________ boys in your school like playing football in their spare time, though others prefer basketball．

quite a lot

quite a few

quite a bit

quite a little

Its makers spent ________ money building the great ship．

the number of

a great number of

a great deal of

a lot

When she told the bad news at the party, her heart sank, but she ________ to be happy．

appeared

seemed

saw

watched

The teacher praised him for ________ he had ________．

a progress; made

the great progress; take

the rapid progress; made

the good progresses; got

When ________ different cultures, we often pay attention only to the differences without noticing the many similarities．

compared

being compared

comparing

having compared

Can you explain ________ having done such a thing?

me the reason for

the reason to me why

me the reason why

to me the reason for

The question now ________ at the meeting is very important．

discussed

to be discussed

being discussed

discussing

________ environmental damage is done, it takes many years for the ecosystem(生态系统)to recover．

Even if

If only

While

Once

Since three months ago, the number of students making notes while listening in class ________ 90％．

has increased by

was increased to

have increased for

had increased by