[ Modal Verbs ]
. Students ___ submit their assignments on time.
A. must
B. can
C. don’t have to

Random Topics:
Passive to ActiveInfinitivesComparatives and Past Perfect TenseGrammar (Possessive Pronouns)Verb FormsTenses of Verbs - UsagePresent Simple and Modal VerbsSentence Structure and Pronoun AntecedentIf- ConditionalClauses and ConjunctionsOther quiz:
Grammar › ViewShe ……. (read) this book last night.
A. readed
B. readded
C. read
D. roaded
Vocabulary › View
Many scientists ________ the trash pile in the middle of the ocean that is easily the size of Texas; they say there is no safe way to clean it and it causes problems to commercial fishermen.
A. decry
B. nefarious
C. dissemble
D. unwonted
Present Tenses › ViewMary has lost her hat and she ……………….. for it until now.
A. have been looking
B. has look
C. has been looking
D. have looked
Past Continuous Tense › View
At 8.30am today I _____ driving to work.
A. was
B. are
C. were
