---Answer the doorbell, please. It must be your uncle.
---It Heidi. She’s coming over this morning to help me with my math.
| A．is | B．can’t be | C．could be | D．will be |
There are still many people suffering a lot，and we are to do something to________poverty.
| A．keep out | B．wipe out | C．give out | D．run out |
The incomes of skilled workers went up.________，unskilled workers saw their earnings fall.
| A．Moreover | B．Therefore | C．Meanwhile | D．Otherwise |
If he________his legs in the last training，he________the coming World Cup，which he has been longing to compete in.
| A．hadn’t hurt；would join in | B．hadn’t hurt；would have taken part in |
| C．didn’t hurt；would go in for | D．didn’t hurt；would have taken part in |
The price in different countries will be based________and local economic conditions.
| A．in advance | B．in conclusion | C．on demand | D．at all costs |
It was a long time before the police________what he was really doing.
| A．caught hold of | B．caught up | C．caught on to | D．caught at |