[ Grammar ]
I do think you…. study hard for your exam
A. must
B. should
C. have to

Random Topics:
Articles and DeterminersCommasSimple Past Tense and Present Continuous TenseAdjective + to + VerbGerunds as objects of prepositionLinking WordsRelative Clauses and Past PerfectAsking & Giving AttentionVerb + InfinitiveTime ExpressionsOther quiz:
Simple Tenses › ViewAre the windows ___ by the janitor every day?
A. cleaning
B. cleaned
C. clean
D. cleans
Vocabulary and Grammar › View
Choose the past form: “Last week, I ___ my leg while skiing.”
A. broke
B. break
C. was breaking
D. breaks
Grammar › ViewFor thousands of years, bread ______ a staple food for many people.
A. is
B. has
C. has been
D. been
Modal Verbs › View
“___ I borrow your pen?
A. Can
B. Must
C. Should
D. Could
