The book didn’t children probably because the author employed too many scientific terms in it.
| A．appeal to | B．apply to | C．intend to | D．lead to |
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 |
You can’t predict everything. Often things don’t ________ as you expect.
| A．work out | B．break out | C．run out | D．put out |
The living room is clean and tidy, with a dining table already ______ for a meal to be cooked.
| A．having laid | B．laying | C．laid | D．being laid |
He spent too much time talking on _______ phone while we were all busy at _______ work.
| A．the; / | B．a; / | C．/; / | D．the; the |
— I really don’t know how to thank you enough.
— _____.
| A．No problem | B．Think nothing of it |
| C．Not at all | D．It doesn’t matter |