Laura opened the door and rushed into the rain _______ I could stop her.
| A．until | B．after | C．before | D．unless |
It’s important _________ us _________ _English well.
| A．of; learning | B．for; to learn |
| C．of; to learn | D．or; learning |
Peter is _____because he hardly ever exercises.
| A．tired | B．happy | C．healthy | D．unhealthy |
---______do you go swimming? ---Sometimes.
| A．How often | B．How long | C．how many | D．How old |
he is very young, he can do many things.
| A．Although, but | B．Although,/ |
| C．/,though | D．But, though |
------How often ______ she exercise?
------Twice a week.
| A．do | B．does | C．doing | D．Did |