Could you tell me ______________________________________?
| A．when does the plane leave | B．how long the plane has left |
| C．when the plane leaves | D．when will the plane leave |
My brother always ____ his lesson, so he is a top student.
| A．works hard at | B．work hardly at | C．work hard at | D．works hardly at |
The dog is very ___, and it can work out the problem____.
| A．smart; easy | B．smart; easily | C．smartly; easily | D．smartly; easily |
Danny is always very happy when he has something ___.
| A．eat | B．eats | C．eating | D．to eat |
Daming likes cars. He enjoys _____ models cars of all kinds.
| A．making | B．make | C．to make | D．made |
Are you afraid _____ plane?
| A．of taking | B．to taking | C．of take | D．for taking |