The theory ________ by Einstein was later to prove true, but at that time few people could accept it.
A.put out | B.put together | C.put aside | D.put forward |
. There are so many kinds of tape-recorders on sale that I can’t make up my mind ____to buy.
A.what | B.which | C.how | D.Where |
. Charles Babbage is generally considered _______ the first computer.
A.to invent | B.inventing | C.to have invented | D.having invented |
. The missing boys were last seen _______ near the river.
A.playing | B.to be playing | C.play | D.to play |
. The patient was warned _______ oily food after the operation.
A.to eat not | B.eating not | C.not to eat | D.not eating |
. I regret _______ you that we are unable to offer you employment.
A.informing | B.having informed | C.to inform | D.to informing |