[ V-ing/to-V ]
Why don’t you use your working hours efficiently instead of _____ overtime?
A. working
B. to work
C. worked
D. work

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Grammar › View_____ you know where the nearest supermarket is?
A. Do
B. Does
C. Don’t
D. Doesn’t
Grammar › View
Donald and Fay always go ________ in the summer.
A. to go
B. go
C. going