The Yellow River, ________ to be “the mother river”, runs across China like a huge dragon．

said

saying

to say

being said

Bill was doing a lot of physical exercise to build up his ________．

ability

force

strength

mind

The average of books bought by him each month ________ 4, that’s to say, an average of 4 books ________ bought by him．

is; are

are; is

is; is

are; are

A survey of the opinions of experts ________ that three hours of outdoor exercise a week ________ good for one’s health．

show; are

shows; is

show; is

shows; are

When asked why he went there, he said he was sent there ________ for a space flight．

training

being trained

to have trained

to be trained

－Didn’t you have a good time at the party?

－Of course I did．As a matter of fact, I had such fun that time seemed to ________ so quickly．

go by

go away

go out

go over

They became friends again that day．Until then, they ________ to each other for nearly two years．

didn’t speak

hadn’t spoken

haven’t spoken

haven’t been speaking

The field research will take Joan and Paul about five months; it will be a long time ________ we meet them again．

after

before

since

when

My parents live in a small village．They always keep candles in the house ________ there is a power cut．

if

unless

in case

so that

－We have booked a room for today and tomorrow．

－________, sir．

I’m sure

My pleasure

It’s all right

I’ll check