[ Grammar ]
The professor urged the students _______ their research papers earlier to avoid last-minute stress.
A. to submit
B. to revise
C. to explore

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Quantifiers & Modals of Obligation › ViewThe doctor has put me on a strict diet. I _ _ _ _ _ eat more fruit and vegetables and do more exercise.
A. must
B. have to
C. ‘ve to
Grammar › View
You look very hot. Have you ___________?
A. been running
B. run
C. been run
D. running
Grammar › ViewI am …………….that I can’t take a break nowdays
A. such busy
B. so a busy
C. so an busy
D. so busy
E. such a busy
Grammar › View
Do we _________ use traveler’s checks?
A. Must
B. Have to
C. Can
