.--Your parents were anxious about you. You _____ home without saying a word.
-- It’s my fault.
| A．mustn’t be | B．shouldn’t have left |
| C．needn’t have left | D．couldn’t have left |
His first book is of great use for our course. But his latest one is ______ worth reading.
| A．better | B．more | C．much | D．very |
In China, _______ pressure to pass _______ exams seems to cause lack of students’ creativity.
| A．/; / | B．the; the | C．the; / | D．/; the |
________ should any money be given to a small child.
| A．On no account | B．From all accounts | C．Of no account | D．By all accounts |
That hotel is always full because it offers a friendly ______ and personal service.
A surface B. atmosphere C. system D. appearance
_____ work has been done to prevent the river being polluted.
A .A number of B A mass of C Several D. A good many