_____ these experiments were successfully completed would we think of
going into humans.
A.If only | B.So that | C.Only if | D.Even if |
There has been a great increase in bicycle sales this year________?
A.does there | B.isn’t there | C.hasn’t there | D.isn’t it |
Many people like white color as it is a ________ of purity.
A.symbol | B.sign | C.signal | D.example |
All the teachers are against the idea to ________the new teaching building beside the sports ground.
A.find | B.set | C.locate | D.build up |
An old friend of mine called me up this morning,but he refused to tell me his present ________.
A.home | B.place | C.where | D.whereabouts |
Mr Hiward,a man ________himself Dan came to see you this morning,and left you a message here.
A.called | B.calling | C.was called | D.calls |