The incomes of skilled workers went up. , unskilled workers saw their earnings fall.
| A．Moreover | B．Therefore | C．Meanwhile | D．Otherwise |
When Premier Zhou Enlai was alive，he________work from morning until night every day，dealing with numerous affairs.
| A．would | B．could |
| C．must | D．might |
—May I tell this to my close friend?
—No，you________.Never let anybody else know about it.
| A．needn’t | B．shouldn’t |
| C．mustn’t | D．can’t |
—Why didn’t Alex attend the party yesterday evening?
—He________not have wanted to see me.
| A．should | B．might |
| C．could | D．would |
It has been announced recently that all the schools________not have the students attend school if the students have high temperatures.
| A．need | B．shall |
| C．could | D．ought to |
We thought there were 35 students in the dining hall，________，in fact，there were 40.
| A．while | B．whether |
| C．what | D．which |