问题补充:
When his father came into his room, Tom pretended a book.
A. to read
B. to have read
C. reading
D. to be reading
答案:
A. to read
B. to have read
C. reading
(答案→)D. to be reading
解析:pretend后面接不定式,故先排除C。再从时间状语When his father came into his room说明read这个动作正在进行。故用不定式的进行式,选择答案D。