________ astronauts go on spacewalks, they wear spacesuits to keep themselves safe.
| A． |
Though |
B． |
Till |
C． |
When |
D． |
Unless |
Mark isn't coming to the concert ______ he has got too much work to do.
| A．so | B．because |
| C．but | D．and |
The girl is very friendly. She often ______ at me when I see her.
| A．speaks | B．holds |
| C．smiles | D．watches |
----______ do you need, Madam?
----Some chicken, please.
| A．Where else | B．Who else |
| C．What else | D．When else |
A journey by train is more ______than by coach.
| A．tiring | B．relaxing |
| C．boring | D．difficult |
If you want to speak English well, it’s better to join an English ______.
| A．camp | B．club |
| C．country | D．centre |