The teacher said that I would be able to speak English fluently ________ six months

6. The teacher said that I would be able to speak English fluently ________ six months.

A. in B. by C. since D. till

7. The police began an ________ into the disappearance of the painting five days ago.

A. investigation B. investigatory C. investigate D. investigating

8. They are having their house ________ by a construction company.

A. to paint B. painting C. being painted D. painted

9. Only after doing his chores ________ to go to meet his friends.

A. Jim was allowed B. did Jim allow C. was allowed Jim D. was Jim allowed

10. I hope you will ________ notice of what I am going to tell you.

A. gain B. keep C. get D. take

11. There were some very strong candidates for the job, but none of them ________ my expectations.

A. took B. gave C. made D. meet

12. ________ from outer space, our earth looks like a “blue planet”.

A. Seen B. Having seen C. Seeing D. Be seen

13. British and Australian people share the same language, but in other aspects they are as different as ________

A. cats and dogs B. chalk and cheese C. salt and pepper D. here and there

14. Even if that laptop is the most expensive in the store, it doesn’t ________ mean that it is the best.

A. severely B. valuably C. doubtfully D. necessarily

15. Graham was exhausted. He ________ tennis tor an hour.

A. had been playing B. played C. has been playing D. was playing

Giúp mình vs ạ: giải thích kèm cách lm giùm mình, 5 đ ạ