THE OWNERS OF SMALL SHOPS HAVE BEEN CONCERNED ………..A NEW MALL …...

30. - FIRST SEMESTER EXAM GRADE 8
Lớp 8 Tiếng Anh FIRST SEMESTER EXAM GRADE 8
30. The owners of small shops have been concerned ………..a new mall ………a month. 30A. about / for B. in / since C. on / for D. about / since