★ Mixed Present Tenses
You really must be tired! You ……………………………….( work) on your book all day long.
A. have worked
B. are working
C. work
D. have been working
Preview next quiz:
How long ………………….( you /live) in the city?
A. have you lived
B. have you been living
C. do you live
D. are you living
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