Having decided to take the trip, he ______ preparing for it.
| A．set up | B．set about | C．set out | D．set aside |
If____________ , the polluted air can result in deadly diseases or even death.
| A．being breathed in | B．having been breathed in |
| C．breathed in | D．breathing in |
When she ____________ the car door, she realized she had left the key in her bedroom.
| A．opened | B．was to open | C．will open | D．had opened |
．Hi, Jessy, nice to see you!
Hi, Linda, nice to see you too. I ____________you would come to the meeting.
| A．hadn’t expected | B．wasn’t expecting | C．didn’t expect | D．don’t expect |
Yunnan province in China was attacked by such a terrible drought this early spring ____________few people had experienced before, ____________ made us worry about global climate changes.
| A．that; that | B．as; which | C．which; it | D．when; as |
____________ he was the last man I wanted to see. I did all that I could to help him.
| A．As | B．Now that | C．While | D．As though |