english summer exercises

p.5
before while until since
because however after when

(1)_____the bell rang,I was washing the dishes.

(2)At the end of the examination,you must stay in your seat
_____you are told to leave.

(3)Chocolate is very delicious._____,it is bad for your teeth.

(4)Where have you been_____I last saw you?

(5)The child cried_____he was frightened.

(6)_____the opening of many new shops in that area,more people are willing to go there.

(7)Farming is difficult_____there is no rain.

(8)Look_____you leap.

(9)you may go_____you have finished your part of work.

(10)_____we were reading,our neighbours were playing mahjong.