---Where are Bill’s jackets? ---_____________.
| A．Yes, they are. | B．It’s on the desk. |
| C．Sorry, I don’t know. | D．No, they aren’t. |
The box is ________ heavy ________ I can’t lift it.
| A．too, to | B．so, that |
| C．very, that | D．too, that |
We're not sure if it _______ tomorrow. If it _______, we won't go hiking.
| A．will rain; rains | B．will rain; will rain |
| C．rains; rains | D．rains; will rain |
If it ________ tomorrow, we will go to the zoo.
A. isn’t rain B. doesn’t rain C. won’t rain
——What do you think of our school basketball team?
——They’re going to lose the match __________ they improve their skills.
| A．unless | B．until | C．if | D．as |
——Why did Tan become interested in the sounds of nature?
——__________he thinks the best music comes from nature.
| A．Since | B．As | C．Because | D．For |