My sister wants to work in that tall building which ______still _______.
| A．is; to be built |
| B．is, building |
| C．is; being built |
| D．has been; built |
At the age of 29, Dave was a worker, _____ in a small apartment near Boston and ______ what to do about his future.
| A．living; wondering | B．lived; wondering |
| C．lived; wondered | D．living; wondered |
I can ______ be a teacher. I’m not a very patient person.
| A．seldom | B．ever | C．never | D．always |
When he _______ the door, he found his keys were nowhere.
| A．would open | B．opened | C．had opened | D．was to open |
Most Americans would prefer to keep their problems ______ themselves, and solve their problems ______ themselves.
| A．to; by | B．by; to | C．for; to | D．in; on |
Every evening after dinner, if notfrom work, I will spend some time walking my dog.
| A． | being tired | B． | tiring | C． | tired | D． | to be tired |