There is no doubt _________ the world climate has been changing in recent years.
| A．that | B．what | C．if | D．whether |
Take care during the holidays! Drinking too much can ____ heart disease and cause high blood pressure.
| A．contribute to | B．relate to | C．attend to | D．devote to |
When I was twenty, I had to ___ before graduation and work in a clothes shop to help support my family.
| A．drop out | B．come out | C．leave out | D．stay out |
The story didn’t_____ children probably because the auther employed too many scientific terms in it.
| A．apply to | B．appeal to | C．refer to | D．lead to |
They are all very clever, but _______of them could work the problem out.
| A． any | B． some | C． none | D． neither |
May 1 vacation is _______.I can’t wait to go back home.
A. coming B. on the way C. approaching D. A.B and C