According to the 2015 Higher Education World Reputation Rankings, Tsinghua University moved t0 26th from 36th last year and Peking University rose nine places to 32, reflecting our country's to developing world-class universities.
| A．commitment | B．instruction |
| C．responsibility | D．permission |
I was really anxious about you. You _______ home without a word.
| A．mustn’t leave | B．shouldn’t have left | C．couldn’t have left | D．needn’t leave |
—We weren’t sure which way to go. In the end we turned right.—You _____ the wrong way. You _____ left.
| A．went; should have turned |
B．have gone; must turn |
C．went; would have turned |
| D．had gone; must have turned |
I lived with my sister this summer and didn’t have to pay rent. So I _____ save most of my salary.
| A．could | B．would | C．was able to | D．should |
He _____ if he works hard for the people.
| A．shall praise | B．shall be praised | C．will praise | D．will be praised |
—_____ he start at once or wait for a while?—Let him start at once.
| A．Will | B．Would | C．Does | D．Shall |