Điền từ thích hợp vào ô trống

16.
17.
18.
19.
20.
The person
.came to see me yesterday is my teacher of Math.
The worker ....... .....you want to meet has just gone out.
I remember the summer ..........my family had a picnic in the wood.
We know the place .........she has goe on for holiday.
The town .........Nam used to live was boring.
...