Some researchers are finding that daydreaming may be important to ______ mental health. Daydreaming, they say, is ______ good means of relaxation.
| A．the; 不填 | B．不填 ; the | C．不填; a | D．不填; 不填 |
----Please call me if there is a problem.
---- Thanks. I won’t ______ to ask for your help if I feel I need it.
| A．hesitate | B．bother | C．consider | D．doubt |
______ in diving suits, they walk around in this magic world, lighted by the lamps of the ship.
| A．Dressing | B．Dressed | C．To dress | D．Being dressed |
---- Who is it that is making so much noise upstairs?
---- ______ the students preparing for the New Year’s Party.
| A．There are | B．They are | C．It is | D．That is |
----What’s that smell?
---- I don’t know, but ______ it is, it’s terrible!
| A．whatever | B．however | C．whichever | D．wherever |
We thought there were 35 students in the dining hall, ____, in fact, there were 40.
| A．while | B．whether | C．what | D．which |