．Unfortunately, when I arrived, Mary , so we only had time for a few words.
| A．was just leaving | B．just left |
| C．has just left | D．had just left |
There is no doubt _______international cooperation is the key to dealing with cyber crime.
| A．then | B．that | C． wheather | D．this |
---They are quiet，aren’t they?
---Yes. They are accustomed ________at meals.
| A．to talk | B．to not talk | C．to talking | D．to not talking |
He risked __________ his job to see me off.
| A．Losing | B．to risk | C．being lost | D．Lost |
He is a strict but kind teacher, ___is always trying to make his classes __ and interesting .
| A．one ; living | B．one who; lively | C．he ; lovely | D．he who; live |
I haven’t seen ________Maggie since I came here.
| A．as lovely a girl as | B．so a lovely girl as |
| C．girl as lovely as | D．as a lovely girl as |