choose the correct answer :
The puncture(was mended-has been mended).The tyre is no longer flat
Ashraf was relieved to her that he (had passed-has passed-passed) the exam
It was first time they (flew-had flown-fly)by concorde
Trees give us valuable (liquids-chemicals)like turpentine
We need wood from trees for(building-decorating)houses
In the film"The Gold Rush",Charlie Chaplin(ate-was eaten) his boots
About 20% of the earth's surface is covered(on-at-with-of) forest
If you don't eat ,you(will die-die).
A lot of ice cream(is eaten-are eaten) every summer
The thieves(arrested-were arrested-have arrested-had arrested) early this morning
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Find the mistake
He broke his arm during playing hockey
If a catalyst is used, the reaction occur more rapidly
Under the bark,there is a circle of soft cells which liquefies every spring