Daisy is reading her English test because she has a test tomorrow. She_____ be studying.

Daisy is reading her English test because she has a test tomorrow. She_____ be studying.

A. will

B. should

C. must

D. can
Xem đáp án
C là đáp án đúng
Lời giải:
must be Ving: chắc hẳn đang làm gì