Sam ________ some knowledge of the computer just by watching others working on it.
A. brought up B. looked up C. picked up D. set up
______ is known to us all is that the old scientist, for ________ life was hard in the past, still works very hard in his eighties.
A. As; whom B. What; whom C. It; whose D. As; whose
I want to buy that kind of cloth because I __________ the cloth _________ well.
A. have told; washed B. have been told; washes
C. have been told; washed D. was told; washed
The place _______ the bridge is supposed to be built should be _______ the cross-river traffic is the heaviest.
A. which; where B. at which; which
C. at which; where D. which; in which
With a large number of people _____________ camping, it has now become one of the most popular activities in the UK.
A. take part in B. took part in
C. taking part in D. to be taking part in
You can’t be sure of ________ you have at present; you cannot be sure of something _______ you might get in the future.
A. that; what B. what; / C. which; that D. /; that
