By the time you arrive home, I _______, so please don’t make any noise when you come in．
| A．have been sleeping | B．would have slept | C．had slept | D．shall be sleeping |
You can hardly imagine the difficulty the woman hadher children.
| A．brought up | B．to bring up | C．bringing up | D．to have brought up |
Scientists are convincedthe p
ositive effect of laughterphysical and mental health.
| A．of; at | B．by; in | C．of; on | D．on; at |
Playing basketball isgreat fun; it also provides us with a chance to develop our sense ofteam spirit.
| A．a;不填 | B．不填;a | C．a; the | D．不填；不填 |
It is hard to say what kind of person he is. Sometimes he is very friendly; at other times he ___ be very cold.
| A．can | B．must | C．will | D．shall |
In my opinion, ___ matters is not one’s looks, but one’s inner thoughts.
| A．that | B．it | C．what | D．this |