—I must leave right now by bike instead of waiting for a taxi.
—Well, The ground is still quite wet.
| A．good idea! | B．go ahead. |
| C．have a nice trip. | D．take care. |
After retiring, he was recommended to ____ gardening as a hobby．
| A．take up | B．take on | C．take off | D．take away |
I ________ thank you too much for all your help to my son while we were away from home.
| A．won’t | B．can | C．can’t | D．will |
. I'd really appreciate ________ if you would turn off the lights before you leave.
| A．you | B．that | C．as | D．it |
It never _____ humans until the mid1990s that some animals can be cloned.
| A．occur | B．is occurred | C．occurred to | D．occurred |
If you _____ his wife’s income____ his own，the total of their income _____ 3000 yuan.
| A．add; to; will add up to | B．add; to; adds to |
| C．add up; to; adds up to | D．will add; for; adds up |