________you may have，you should gather your courage to face the challenge.
| A．However a serious problem |
| B．What a serious problem |
| C．However serious a problem |
| D．What serious a problem |
I keep medicines on the top of the shelf, out of the children’s _____.
| A．reach | B．hand | C．hold | D．place |
With ____ she needed ____, she left the supermarket happily.
A all; bought B. something; to be bought
C. all; buying D. everything; to buy
Although there were so many people in the square, I could _____ my friend.
a. pick up B. pick out C. make up D. pick away
---What do you thin of the book?
---Oh, excellent. It’s worth _______ a second time.
| A．to read | B．to be read | C．reading | D．being read |
What they need most _____ money while what we need most _____ textbooks.
| A．were; is | B．are; is | C．was; are | D．is; are |