Choose the correct option A; B; C or D to complete the following sentences

III. Choose the correct option A, B, C or D to complete the following sentences.
1. …………………………….. visiting Ha Long Bay? – That’s a good idea!
A. How about    B. Let’s    C. What about    D. A&C are correct
2. Students in our school have two ……………………………….. each day.
A. 20-minutes breaks    B. 20-minute breaks     C. 20-minute break     D. 20-minutes break
3. Hoa’s homework ……………………………………. about two hours each day.
A. takes    B. costs     C. uses    D. spends
4. American students usually have portable CD players with small ……………
A. electronic speaker    B. amplifier     C. earphones     D. microphones
5. I have English class ……………….. seven o’clock ………………… Monday.
A. at / on    B. on / on     C. in / at     D. at / at
6. I’m going to stay ……………………. my grandparents in the countryside for a week.
A. with    B. to    C. at     D. on
7. …………………… don’t you come to my house for some music? – OK. Let’s go.
A. When    B. Let’s     C. What    D. Why
8. “Which is the …………………. apartment for my family, Nhat?” said Mr. John.
A. best    B. better    C. more    D. most