[ Past Continuous Tense ]
We ……… in the classroom, when the headmaster entered
A. have all been sitting
B. don’t sit
C. were all sitting
D. are all sitting

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Gerund vs. Infinitive › ViewI dislike … money on non-essential items.
- spending
- to spend
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Their relationship was ______________ because of jealousy.
A. On
B. In
C. Over
D. Of
This summer I ___________ travel to Spain with my friends.
A. am going to
B. will
Grammar › View
You had better ………… a doctor about that bad cough.
A. to see
B. see
C. seeing
D. to seeing
