.He was about to leave ______the telephone rang; ______was from his mother.
| A．when; that | B．before; which | C．when; it | D．before; this |
It is this kind of exciting trip _____most of my classmates only dream about.
| A．when | B．while | C．as | D．that |
The engineers are so busy that they have zero time for outdoor sports activities, _____they have the interest.
| A．wherever | B．whenever | C．even if | D．as if |
--Oh, Kate! Glad to see you again. It ____my pleasure to see you here.
---Me, too.
| A．adds in | B．adds to | C．adds up | D．adds up to |
Only when he got there _____how much damage had been caused.
| A．be realized | B．he had realized |
| C．had he realized | D．did he realize |
The work was difficult, but Tom’s ____expression showed that he would finish it in time.
| A．stubborn | B．determined | C．concerned | D．surprised |