A lot of children never fully ______ their mothers until it is too late.
| A．urge | B．appreciate | C．accuse | D．motivate |
Don’t waste your words any more; she is as ______ as a mule (骡子) and no one can persuade her.
| A．reliable | B．stubborn | C．determined | D．tired |
The teacher asked me _____.
| A．that I had finished my homework | B．that had I finished my homework |
| C．whether had I finished my homework | D．if I had finished my homework |
—Oh, it’s you. I didn’t ______ you just now!
—That’s because I have just had my hair cut and I’m wearing new glasses.
| A．recognize | B．know | C．see | D．find |
The number of people at present ______ sixty, but a number of people______ coming here to get tickets for free.
| A．is; is | B．is; are | C．are; are | D．are; is |
—Why did he come back?
—It is ______ he forgot to take his umbrella with him.
| A．for | B．as | C．since | D．because |