The visiting professor gave us some advice,________ of great help to our English learning.
| A．I think it is | B．I think which is | C．which I think is | D．which I think it is |
. Students are often reminded that chances _______ to the well-prepared.
| A．belong | B．are belonged |
| C．are belonging | D．will be belonged |
—It’s a pity that Wang Qiang failed in the driving test again.
—How can you expect him to pass _______ he hasn’t been practicing enough?
| A．when | B．once | C．unless | D．though |
. If a teacher gives a student _______ hearty smile, the student will treat the teacher as _______ agony aunt.
| A．The; the | B．不填; an | C．不填; the | D．a; an |
----You couldn’t have chosen a better gift for me.
----______.
| A．I’m sorry you don’t like it | B．That’s all right |
| C．I’m glad you like it so much | D．I agree with you |
Without the air to hold some of the sun’s heat, the earth at night_____very cold, too cold for us to live.
| A．will be | B．would have been | C．is | D．would be |