I remember her face but I cannot _____ where I met her.
| A．recall | B．remind | C．remember | D．remark |
The reason_______ he didn’t come was that he was injured.
| A．that | B．why | C．because | D．when |
There is no doubt _________ the world climate has been changing in recent years.
| A．that | B．what | C．if | D．whether |
Will you help him________ you see an old man in trouble ?
| A．though | B．so | C．because | D．when |
I usually do my homework after dinner until 10 pm, ______ is my bedtime.
| A．who | B．what | C．which | D．that |
We are told that more new teaching buildings ________ next year.
| A．build | B．was built | C．has built | D．will be built |