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----- Nội dung dịch tự động từ ảnh -----
21. After
a. carrying b. checking
22. Surely 15 minutes is.
a. long time
at the desk, they had their suitcases taken upstairs..
d. leaving
23. I usually.
a. ride
c. landing
for you to make tea.
b. enough time
c. enough long d. too enough
................my bicycle to the countryside on Sundays.
b. drive
c. go
d. take