.The vegetables didn’t taste very good.They＿＿＿＿too long.
| A．had been cooked | B．were cooked |
| C．had cooked | D．cooked |
One Friday, we were packing to leave for a weekend away _____ my daughter heard cries for help.
| A．after | B．while | C．since | D．when |
It’s ten years since the scientist ____ on his life’s work of discovering the valuable chemical.
| A．made for | B．set out | C．blocked out | D．turned up |
Fruit _______ several kinds of vitamins, ________ vitamin C.
A. contains; includedB. forms; including
C. forms; containingD. contains; including
The development of industry has been ______ gradual process throughout ______ human existence, from stone tools to modern technology.
| A．不填；the | B．the；a | C．a; 不填 | D．a; a |
We should get prepared for dealing with ________problems_________.
| A．any, arise | B．which, are arisen | C．whatever, arise | D．what, are arisen |