If you want to borrow a football after school, your student card ___ here.
| A．has to leave | B．must leave | C．has to be left | D．must be left |
The number of college graduates in a country _____ its cultural standard nowadays.
| A．reflects | B．reflect | C．are reflecting | D．have reflected |
—Do you mind if I open the window?
—_____, I feel a bit cold.
| A．Of course not | B．I’d rather you didn’t |
| C．Go ahead | D．Yes, please |
—Shall we run around the park or go for a bike ride?
—______. They are both good activities.
| A．That’s all right |
| B．It makes no difference to me |
| C．Yes, I like them very much |
| D．I’d prefer a bike ride |
—How did she get infected?
—She ____ the viruses without any protection.
| A．exposed to | B．had exposed to | C．was exposed to | D．has exposed to |
With two children _____ middle school, the parents are working hard.
| A．attended | B．being attended | C．having attended | D．attending |