Exercise 1. Complete the sentences with the correct present form. 1. Henry __________________ (not/ find) a job yet. 2. I _________ (drive)! You can sit in the back with Martin. 3. How long __________ (you / wait) for the bus? You look really annoyed! 4. They usually __________ (help) their mom after school. 5. Joan ___________ (seldom / sit) next to Eve.

1. hasn't found 

DHNB: yet (thì HTHT)

S + has/have + not + V3/ed + for/since + time 

2. am driving 

Hành động đang diễn ra ở HT --> HTTD

S + am/is/are + Ving

3. have you waited 

DHNB: How long 

How long + has/have +  S + V3/ed ? bao lâu ... ? 

4. help

DHNB: usually (thì HTĐ)

S số nhiều + V1 

5. seldom sits 

Trạng từ chỉ tần suất + V 

be + Trạng từ chỉ tần suất 

S số ít + Vs/es (thì HTĐ)

DHNB: seldom
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