We thought there were 35 students in the dining hall, _____, in fact, there were 40.
| A．while | B．whether | C．what | D．which |
After searching the mall for a whole afternoon, the mom finally bought a nice skirt, as a present for her young daughter, at a _____ yesterday.
| A．discount | B．bargain | C．pay | D．cost |
Someone is ringing the doorbell. Go and see _______.
| A．Who is he | B．who he is | C．Who is it | D．who it is |
When he was there, he _____ go to that coffee shop at the corner after work every day.
| A．would | B．should | C．had better | D．might |
One advantage of playing the guitar is _____ it can give you a great deal of pleasure.
| A．how | B．why | C．that | D．when |
What you said just now ______ me of that American professor.
| A．informed | B．reminded | C．memorized | D．mentioned |