Bài 1: Put the verbs in brackets in the present simple tense
At the physics lesson the teacher (1.ask)....... the children about the influence of heat and cold on the body.
"Heat (2.make) ........... thing bigger and cold (3.make)......... thing smaller'', answer a boy. " Quite right", (4.say).......... the teacher. " Can you(5.give)......... an example".
" In summer, when it's hot, the days (6.be)........ longer, but in winter, when it's cold, the day (7.be)..........
shorter,(8.answer)...........the boy.
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