.
The growing speed of a plant is influenced by a number of conditions, _______are beyond our control.
| A．most of them | B．most of which | C．most of what | D．most of that |
_____ a reply, he decided to write again.
| A．Not receiving | B．Receiving not |
| C．Not having received | D．Having not received |
My TV has ________so I can't watch it and I don't know how to kill time.
| A．broken in | B．broken down |
| C．broken out | D．broken into |
It was such a ________to hear that her son was found safe and sound in the forest.
| A．ease | B．assistance | C．comfort | D．relief |
I try to ______ a few minutes every day to do some exercises.
| A．set out | B．set off | C．set up | D．set aside |
________writing the article，the author forgot that he had a meeting to attend.
| A．Absorbed in | B．Absorbing at |
| C．To absorb in | D．Having absorbed by |