Đề bài

b. Fill in the blanks with the past simple in the passive form of the verbs in brackets.

(Điền vào chỗ trống với thì quá khứ đơn ở dạng bị động của các động từ trong ngoặc.)

1. Two factories were closed(close) because they caused too much air pollution.

2. The park __________ (close) because some parents thought it was unsafe.

3. Some houses in the town __________ (build) hundreds of years ago.

4. The two supermarkets __________ (not open) last year.

5. A bus system __________ (develop) to improve transportation in the community.

6. The castle __________ (rebuild) in the 15th century after it had been destroyed by fire.

Phương pháp giải

TENSES	ACTIVE VOICES	PASSIVE VOICES
Past simple tense (quá khứ đơn)	S + Ved/V2	S + was/were + VpII

Lời giải của GV Loigiaihay.com

1. Two factories were closed because they caused too much air pollution.

Giải thích: Chủ ngữ “Two factories” số nhiều nên ta dùng “were closed”.

2. The park was closed because some parents thought it was unsafe.

Giải thích: Chủ ngữ “The park” số ít nên ta dùng “was closed”.

3. Some houses in the town were built hundreds of years ago.

Giải thích: Chủ ngữ “Some houses” số nhiều nên ta dùng “were built”.

4. The two supermarkets weren’t opened last year.

Giải thích: Chủ ngữ “The two supermarkets” số nhiều nên ta dùng “weren’t opened”.

5. A bus system was developed to improve transportation in the community.

Giải thích: Chủ ngữ “A bus system” số nhiều nên ta dùng “was developed”.

6. The castle was rebuilt in the 15th century after it had been destroyed by fire.

Giải thích: Chủ ngữ “The castle” số nhiều nên ta dùng “was rebuilt”.