People tend to love agricultural products ________ without the use of fertilizers, pesticides or chemical additives.
| A．growing | B．grown | C．being grown | D．having been grown |
It was many years ____ American women were given the rights to vote.
| A．when | B．since | C．before | D．as |
_____ is certain is ______ the mystery of Stonehenge has never been fully explained.
| A．It, that | B．What, what |
| C．It, what | D．What, that |
Little Tom admitted _____ in the examination, _____ that he wouldn’t do that in future.
| A．to cheat; to promise | B．cheating; promise |
| C．having cheated; promising | D．to have cheated; promised |
The teacher is much kinder to Tom , _____, certainly, makes the others very angry.
| A．who | B．which | C．that | D．what |
At the end of last month, ten primary schools ______ with the help of Project Hope.
| A．had set up | B．had been set up |
| C．set up | D．were set up |