There’s only ten minutes to go. We can’t wait any more---- ______, we should start at once.
| A．what’s more | B．in a word | C．in the end | D．in other words |
A survey of the opinions of experts___that three hours of outdoor exercise a week___good for one’s health.
| A．show;are | B．shows;is |
| C．show;is | D．shows;are |
When asked why he went there,he said he was sent there___for a space flight.
| A．training | B．being trained |
| C．to have trained | D．to be trained |
Scientists are convinced___the positive effect of laughter___physical and mental health.（）
| A． | of;at | B． | by;in |
| C． | of;on | D． | on;at |
Don’t take too much of the medicine;it does you more harm than good if you______.
| A．do | B．take |
| C．like | D．have |
—Will you join us in the game?
—Thank you,_______
| A．but why not? | B．but I’d rather not. |
| C．and I won’t. | D．and I’ll join. |