With everyone's face ________behind the mask，it's hard to tell who they really are.
| A．hidden |
| B．being hidden |
| C．having hidden |
| D．hiding |
It was in the office __________ my sister works __________ I met the new manager.
| A．that; that | B．where; where |
| C．that; where | D．where; that |
—Have you got any particular plans for the coming holiday?
—Yes. __________, I'm going to visit some homes for the old in the city.
| A．If ever | B．If busy | C．If anything | D．If possible |
Neither I nor he __________ French.
| A．speak | B．doesn't speak |
| C．speaks | D．to speak |
When a new disease breaks out, experts must __________ what to do in the fastest way.
| A．figure out | B．put out | C．point out | D．make out |
The retired man __________ most of his savings to the school damaged by the earthquake.
| A．donated | B．sacrificed | C．provided | D．distributed |