________a reply from my American friend Bill, I decided to send another email to him.
| A．Not having received | B．Not being received |
| C．Not receiving | D．Not to receive. |
I missed what was happening because I wasn’t ______ very closely.
| A．noticing | B．running |
| C．watching | D．glancing |
She went to the station to meet her husband, but _____ him in the crowd.
| A．passed | B．recognized |
| C．missed | D．lost |
. It’s hard to rescue drowning people because they _____ so much.
| A．sink | B．swim |
| C．jump | D．struggle |
High unemployment _____ the government billions of pounds in lost taxes.
| A．spends | B．takes |
| C．uses | D．costs |
What’s the matter with the radio？ Why isn’t it _____？
| A．broadcasting | B．working |
| C．doing | D．sounding |