It was in the lab_________was taken charge of by Johnson_________they did the experiment.
| A．where; which | B．which; that | C．which; which | D．that; which |
In the morning you can get up only______ all your equipment buried and you’ve got to dig it out．
| A．to be found | B．found | C．to find | D．finding |
She thinks women have to do more than men do when they ______ for jobs or honors．
| A．select | B．compete | C．store | D．charge |
_______ many times, he finally understood it．
| A．Taught | B．Teaching | C．Having taught | D．Having been taught |
Ladies and gentlemen, please remain ________ until the plane has come to a complete stop．
| A．seated | B．seating | C．to seat | D．seat |
He told us whether _________ a picnic was still under discussion．
| A．to have | B．having | C．have | D．had |