— The Dragon Boat races are so exciting, but our boat is still behind.
— Don’t worry. I am sure______ our team will win!
| A．if | B．that | C．whether | D．why |
He _____ in this factory for 20 years already.
| A．will work | B．works |
| C．has worked | D．is working |
I will stay at home and read some books if it _________ tomorrow.
| A．rain | B．will rain |
| C．rains | D．is going to rain |
---Why didn’t you go shopping with me two hours ago?
---Because my mother________ me outside.
| A．waited for | B．is waiting for |
| C．was waiting for | D．has waited for |
Not only Jim but also his parents ______ a few places of interest since they came to China.
| A．has visited | B．will visit |
| C．have visited | D．visited |
This robot is supposed to save a lot of labor, but it remains a problem if it ______.
| A．is | B．saves | C．does | D．has |