Every one of us must know this: _________ we live can we save the earth．
| A．by changing the way only | B．by only changing the way |
| C．only by changing the way | D．by changing only the way |
_____________ in my present work, I would be quite willing to do what you ask me to.
| A．If I am not engaged | B．If I don’t engage |
| C．Were I not engaged | D．Didn’t I engage |
Many people who had seen the film were afraid to go to the forest when they remembered
the scenes __________ people were eaten by the tiger.
| A．in which | B．by which | C．which | D．that |
. The car ____________ at the present speed until it reaches the foot of the mountain at about nine o'clock tonight.
| A．went | B．is going | C．goes | D．will be going |
. — Do remember to take this medicine three times a day with warm boiled water.
— _________________.
| A．Heard it | B．Made it | C．Got it | D．Taken it |
________________________, and the problem would be straightened out（解决）.
| A．A bit more effort | B．Having a little effort |
| C．If you have a bit more effort | D．There being a little effort |