Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.
A.since | B.after |
C.before | D.when |
I shall take you to France ________ you are well enough to travel.
A.quickly | B.directly | C.finally | D.happily |
—He should have come to join in the thorough cleaning.
—He ________, I think. It's not his turn.
A.needn't have to | B.needn't have | C.didn't have to | D.doesn't need to |
Fisherman Wang Bingzhong from Changli county,Herbei province,examines his boat on May 25 after it was damaged in ________he described as a pirate attack.
A.which | B.that | C.what | D.where |
The enemy troop could hardly make any advance, and ________ could they fall back.
A.neither | B.so | C.either | D.both |
You can’t imagine the hard time he had ______ the horse in.
A.holding | B.to hold | C.held | D.hold |