You must make sure your tea is not too hot ______ you drink it.
| A．before | B．after | C．since | D．while |
We must save the animals .
| A．danger | B．in danger | C．are in danger | D．dangerous |
I think you must the rules. Please .
| A．make, think it | B．make, think it about |
| C．follow, think about it | D．follow, think it of |
There are people in the shop. So the shop is crowded(拥挤的).
| A．too much, much too | B．too much, too much |
| C．too many, much too | D．too many, too much |
Mr. Smith goes to work his bike, but his daughter goes to school subway.
| A．by, by | B．by, on | C．on, by | D．in, on |
Dave is never class.
| A．arrive | B．late | C．arrive late | D．late for |