1 She never ear the peanut, because she allergic with this kind of food 

sự thật => HTĐ

with sth/sb

2 we must sure to get tickets to the show tonight 

must + V

sure to do sth

get sb/sth to do sth

3 It essential for our health to have a balanced diet

Be essential for sb/sth

4 I am used to go for walk at bedtime 

at + t/g

used to do sth

5 if you keep to ask him the silly questions, you will be trouble 

Câu ĐKL1: if + S + V (HTĐ), S + will + V

6 How much weight did you put last year?

7 you should concentrate on what you do now

should + V

8 By keeping fit, you should go on a diet 

by + V-ing 

@linanguyenpham