It is easy to be grateful for the good things, ______ a life of rich fulfillment comes to those who are also thankful for the setbacks.
| A．that | B．which | C．while | D．when |
It was ___ the quality of life in the future ___ I took this training course, not just to make more money.
| A．to improve; that | B．improving ; when | C．to improve; when | D．improving ; that |
With a lot of difficult problems _, the manager felt like a cat on hot bricks.
| A．settled | B．settling | C．being settled | D．to settle |
Mr Black has two sons, one of ________working as a doctor.
| A．them | B．who | C．whom | D．whose |
—Who is the man ______ by a group of students there?
—A professor _____ research on physics.
| A．followed; did | B．following; did |
| C．followed; doing | D．following; doing |
— You were late again, Peter.
—Sorry, I ______ to be here on time, but the traffic on the roads _____ heavy.
| A．wanted; was | B．had wanted; was |
| C．wanted; would have been | D．had wanted; would have been |