1. Chia dạng đúng của động từ trong ngoặc.
1) I have (not work) ............... today.
2) We (buy) ............... a new lamp.
3) We (not plan) ................. our holiday yet.
4) Where (be) ................ you?
5) He (write) ................ 5 letters.
6) She (not see) ................ him along time.
7) The bill is not right. They (make) ................ mistake.
8) Someone (take) .................. my bike.
9) I (work) ................ here for 3 years.
10) ..................... you ever (eat) ................... sushi.
11) How long ........................ (you know) .......................... each other?
12) He (live) ................ here all his life.
13) It is the second time he (lose) ................. his Job.
14) She (no see) .................. the UFO before.