______ scientists know where a storm will happen, winds will suddenly change, carrying the storm to a new direction.
| A．Even if | B．Since | C．Despite | D．Unless |
When the teacher found some of his students getting nervous at the examination, he told them to ____
| A．take is seriously | B．take it easy | C．mind their business | D．come to the point |
____you had worked hard, you would have easily passed the final test.
| A．When | B．If | C．Thought | D．Since |
If his parents are convinced ____ the fact that his son always focuses his mind his study.
| A．of; on | B．of; at | C．by; to | D．on; at |
I will go to the science palace to morrow _____it doesn’t rain heavily.
| A．as if | B．in case | C．even if | D．so long as |
____ the rain, he insisted, the football game can not be cancelled.
| A．Instead of | B．In spite of | C．Due to | D．In relation to |