21.Below

22.Emergency

23.Quick

24.Between

25.Tissue

26.To cover

27.Go inside

28.Sure ,Here you are

29.Is bought

30.After

21/The patiert's feet should be elevated or his head ought to be lowered ______ the level of the heart.
above
below
after
before
22/ Please send an ambulance to Nguyen Van Troi School. This is an ______.
amichair
emergency
address
awake
23/ My friend had a bad cut on her head. It's bleeding ______ badly.
later
quite
large
quick
24/ The address of the school is ______ Nguyen Thai Son and Pham Van Doing.
next
near to
between
close
25/ People should cool the burns immediately to minimize ______ damage.
back
tissue
body
head
26/ We use a towel or a handkerchief ______ the wound.
to discover
to take care
to care
to cover
27/ My grandmother always keep the window open in order to let fresh air ______ in.

to go

went

go

gone

Dịch: Bà tôi luôn mở cửa sổ để không khí trong lành tràn vào.

Let + st/sb + V

Go in: vào
28/ A - Could you give me a bandage, please? B - ______.
- Don't forget
- I'm sorry, that would be nice
- Sure, Here you are
- Yes, thank you
29/ The book ______ from Xuan Thu bookstore is very interesting.
buy
buys
is bought
bought

Đây là câu rút gọn mệnh đề quan hệ
30/ Milk botles can be reused ______ being cleaned.
to
without
after
before

#NOCOPY