________ he studies hard, he will never pass the examination.
| A．If | B．Unless | C．Even if | D．Even though |
It rained heavily in the south, serious flooding in several provinces.\
| A．caused | B．having caused | C．causing | D．to cause |
Wehave bought so much food now that Tom won’t be with us for dinner.
| A．may not | B．needn’t | C．can’t | D．mustn’t |
I feel so excited！At this time tomorrow morning Ito Shanghai.
| A．will fly | B．will be flying | C．will have been flying | D．am flying |
House prices vary from place to place and are usually highthere are famous schools.
| A．where | B．since | C．when | D．whether |
She showed the visitors around the museum, the constructionhad taken more than three years.
| A．for which | B．with which | C．of which | D．to which |