—Who's that boy reading in the garden? Is it David? —It ____be David. I saw him in the classroo
A. must B. can't C. may D. shouldn't
题目简介
—Who's that boy reading in the garden? Is it David? —It ____be David. I saw him in the classroo
题目详情
—It ____be David. I saw him in the classroom just now.
A. must
B. can't
C. may
D. shouldn't
答案