j几个选择题 ！你行吗？

2. Tom ___ into the house when no one ___.
A. slipped, was looking B. had slipped, looked
C. slipped, had looked D. was slipping, looked
4.I don ' t think Jim saw me; he ___ into space.
A. just stared B. was just staring
C. has just stared D. had just stared
6.---Hey, look where you are going!
---Oh, I ' m terribly sorry.________.
A. I ' m not noticing B. I wasn ' t noticing
C. I haven ' t noticed D. I don ' t notice
7. The reporter said that the UFO ___ east to west when he saw it.
A. was traveling B. traveled
C. had been traveling D. was to travel
10. “ What ' s the matter, Ali? You look sad. ”
“ Oh, nothing much. As a matter of fact, I ___ of my friends back home. ”
A. just thought B. have just been thinking
C. was just thinking D. have just thought

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