It was in the lab, ________ was taken charge of by Professor Curie, _______ they did the experiment.
| A．where; that | B．that; that | C．which; that | D．which; where |
_____ first voyage of the ship ---- Titanic was not ______ success.
| A．The, a | B．A, a | C．A, the | D．The, the |
---- Johnson, how are you getting along with your new guys?
---- _____. I have known them all.
| A．Very kind. | B．Very well. | C．Very pleased. | D．Very comfortable. |
-- Mr Smith ,What shall we do next?
-- Let students ___________for discussion.
| A．swept the floor | B．build the floor | C．open the floor | D．took the floor |
--I'll be waiting for you at home.
-- ______ I were busy and couldn't come?
| A．What if | B．What when | C．How if | D．How when |
His mother could do nothing but _______ for the doctor to arrive.
| A．to wait | B．waiting | C．waited | D．wait |