It’s very dangerous to _______ these viruses without any protection.
| A．be exposed to | B．expose to | C．expose | D．be exposing to |
In order to support his study, his brother can’t wait ______ money.
| A．to earning | B．to earn | C．for earning | D．for earn |
It’s always difficult to live in a foreign country, ______ when you don’t speak the language.
| A．extremely | B．especially | C．basically | D．naturally |
He still remembers the place ______ we visited last year?
| A．that | B．where | C．when | D．in which |
We won’t give up ______ we should fail 10 times.
| A．as if | B．except for | C．in case | D．even if |
The beauty of Hangzhou is ______ what words can describe.
| A．less than | B．no more than | C．more than | D．not more than |