Câu `27` : D

`-` Dẫn chứng : Câu thứ hai trong bài (He was s shop assistant in a grocery store near the market

Câu `28` : C

`-` Dẫn chứng : Câu thứ ba trong bài (He was given the key to the store as he was supposed to be the first to arrive and open the shop at six o'clock)

Câu `29` : D

`-` Dẫn chứng : Câu thứ năm trong bài (By seven o'clock , he had to make sure that the five metal racks of dried goods , bread and cookies were displayed neatly ouside

Câu `30` : B

`-` Dẫn chứng : Ah Seng had to work everyday except Sunday as the shop would be closed

Câu `31` : D 

`-` Dẫn chứng : Câu thứ chín trong bài

Q27: D

`=>` Câu 2 ( từ đầu đến near the market )

Q28: C

`=>` Câu 3 ( tiếp theo đến in the morning )

Q29: D

`=>` Câu 5 ( từ the owner đến for him )

Q30: B

`=>` Ah Seng had to work everyday except Sunday as the shop would be closed

Q31: D

`=>` Câu còn lại

$\textit{#fulong}$