Speak to him slowly________ he may understand you better.
| A．since | B．so that | C．for | D． because |
When the sun shines, the clouds _________ , and we can see everything much better.
| A．clear | B．clean | C．appear | D．leave |
The Three Gorges Dam can produce _________ for millions of people every year.
| A．electricity | B．water | C．love | D．light. |
— Shuofang Airport, please. I have to be there by 7:00.
— _________, but I'll do my best.
| A．I can't promise anything | B．Don’t worry |
| C．We still have enough time left | D．Sorry, I can’t |
I don’t doubt _________.
| A．that the music is worth listening to |
| B．if the music is worth listening to |
| C．that the music is worth listening |
| D．whether the music is worth listening to |
—Is your uncle in his _________?
— Yes. His _________ birthday is coming next month.
| A．forty; forty-first | B．forties; forty-first |
| C．forties; forty-one | D．forty; forty-first |