We’ll stay at home if it ______ this afternoon.

What ______ you ______ when you father came back?

We’ll plant trees tomorrow, and I don’t know       Tom will come and join us.

If there       no buying and selling of animals, there      no killing in nature.  

They develop their skills _________ they can do things better and better.

Don’t talk loudly at the meeting. If you ________, you will have to leave.
A. do                      B. are                       C. did

He was riding to school   he was hit by a car this morning.

_______ there were only five soldiers left at the front,______ they went on fighting.

As we all know, planting trees is good for the environment. Our class will go to the Sun Island tomorrow. As soon as we      there, we’ll begin to plant trees.
A. arrived  B. arrive   C. will arrive

If you _____ your homework, you can go out to play football.
A. finish                      B. will finish                C. are finishing