--How did he get infected?
--She ____the viruses without any protection.
| A．exposed to | B．had exposed to | C．was exposed to | D．had been exposed |
Who does that shop assistant think he is? He behaves as if he _______ the grocery．
| A．own | B．owned | C．will own | D．has owned |
“Drive-ins” have large parking lots _______ customers are served in their cars by waitresses．
| A．who | B．when | C．which | D．where |
If you _______ a high fever and a bad headache, you are advised to consult a doctor.
| A．develop | B．perform | C．present | D．gather |
The CCTV Spring Festival Gala Evening _______ annually since 1983.
| A．was run | B．is running | C．had been run | D．has been running |
—Going to the dentist really frightens me.
—_______. Don’t be a chicken!
| A．Come on | B．Fine | C．Go ahead | D．Poor you |