I don’t want___like I’m speaking ill of anybody,but I had to work extra hours to finish a report for my boss
| A．to sound |
| B．to be sounded |
| C．sounding |
| D．to have sounded |
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 |
_____ computers are convenient to us in daily life, it may also cause other problems.
| A．Whether | B．Because | C．As | D．While |