1. On the shelves at the back

1. Mrs Susan got a new job last week

2. The manager of the office told her about her work there on her first working day

3. She needs to help the manager write and send e-mail, make appointments, receive and answer telephone calls and write reports.

4. I think maybe she is a secretary

Fruit is much better for your teeth than candy.

Theo de bai ta co : 

Dat : \(\frac{x}{2}=\frac{y}{3}=k\)

\(\Rightarrow x.y=2k.3k\)

\(30=6k^2\)

\(30:6=k^2\)

\(5=k^2\)

de co van de ko 

1. didn't

2. did

3. doesn't

4. does

5. don't

6. do

7. does

8. doesn't