They enjoyed fresh watermelon last fall because they______ watermelon seeds in the spring.
| A．were planting | B．would plant | C．have planted | D．had planted |
Do be careful with what you are to say. If you ___, you will leave a bad impression.
| A．don’t | B．aren’t | C．won’t | D．can’t |
Come on! The man in charge of the job ___ you have to explain everything is waiting.
| A．who | B．about which | C．to whom | D．where |
I had no one ___ me, for I could deal with it all by myself.
| A．to help | B．help | C．helped | D．helping |
To better understand the English poem, we ___ it into Chinese.
| A．put | B．make | C．change | D．turn |
Is it a wonder that _____ little cells can store _____ much energy?
| A．such, so | B．so, much | C．so, so | D．such, such |