Choose the best ans wer

Mọi người giúp em với ạ 
----- Nội dung dịch tự động từ ảnh -----
U. WIUIC
C. was wTRing
V, WELI
7.
I have studied English
A. in
4
years.
B. for
C. with
D. since
8.
"Can you help me carry my bags?" "
A. No, thanks.
B. I'd love to
D. You're welcome.
C. Certainly. I'll help you.
Why don't you participate
B. at
9.
this activity?
Č. with
A. on
D. in
10.
"May I help you?"
A. I'm sorry. I'm really busy.
C. Nice to meet you, Nam
that shirt.
**
B. Yes. That's very kind of you.
D. What can I do for you?
11. You need
A. buy
12. Ten countries participated in the discussions
B. to buy
C. buying
D. for buying
A. took part
B. hold
C. told
D. took
ion fom