Researchers have found clear and convincing evidence ________ happiness is the key to better health and longer lives.
| A．where | B．whether | C．how | D．that |
For those who work with their brains, exercise is ______.
| A．of very value | B．of great valuable | C．great valuable | D．very valuable |
If you don’t go to the party tomorrow evening, ______.
so do I B. so will I C. nor do I D. neither shall I
Much to the couple’s comfort, their income is now double ______ it was five years ago.
| A．that | B．than | C．which | D．what |
It is required that the students ______ mobile phones in our school, so seldom ______ them using one.
| A．can’t use; will you see | B．not use; will you see |
| C．mustn’t use; will you see | D．shouldn’t use; you will see |
The foreign teacher Mr. Halt has a strange way of writing. Here’s a notice from him, but no clear ______ of what he has written can be made at all.
| A．explanation | B．meaning | C．idea | D．sense |