1. If you don't want to go to the travel agency to book the tour in person, you should make it via the phone.
A. book the tour
B. in person
C. should make
D. via the phone
giải thích: cấu trúc If : If +S+HTĐ, S+will+Tương lai đơn+O
Sửa:1. If you don't want to go to the travel agency to book the tour in person, you will make it via the phone.
2. The wifi connection which used to be not so strong for our class to use has been improved since last Friday.
A. which
B. so strong
C. to use
D. has been improved
Sửa: The wifi connection which to used to be not so strong for our class to use has been improved since last Friday.
CHO MK XIN HAY NHẤT CHO TEAM Ạ!