Special devices have already been made (2)..... to place on the roofs of houses

Câu hỏi:

A.difficult

B.effective

C.available

D.valuable

Trả lời:

2. available: có sẵn\

Chọn C

Câu 1:

The weather was so beautiful that we decided to go to the beach. => So _____.

Câu 2:

The film had ____ started by the time we got to the cinema.

Câu 3:

In the other two _______, millions of americans enjoy basketball.

Câu 4:

Make a non-defining relative clause from the two sentences

Catherine ruled Russia for over 30 years.she made many important changes.

Câu 5:

flats to (3)..... the sun’s rays

Câu 6:

Thousands of these devices are now being used to provide (4).... in homes

Câu 7:

throughout the United State (5).... more than a million solar

Câu 8:

(6)... units have already been built in home in Japan

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