[ Grammar ]
For students who don’t know _____, they should ask their teachers for help.
A. how to do the task
B. how the task to be done
C. how they to do the task
D. how can they do the task

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Tenses of Verbs - UsagePresent Perfect Negative and InterrogativeSubject Verb Agreement and Verb TensesModal "Have to"Grammar - much, many, a lot ofGrammar: Simple Past and Past ContinuousIndependent and Dependent ClausesGrammar TOEFLCorrelative Conjunction & Complex SentencesConjunctions & Cohesive DevicesOther quiz:
Tenses › ViewThe boy ________ late this morning.
A. wake up
B. wakes up
C. waking up
D. woke up
Vocabulary › View
The population got out of control because there were no natural ………. to keep it in check.
A. predators
B. transports
C. excavations
D. generations
Grammar › ViewThe rabbit tried to ____ the storm by running away.
A. journey
B. peeks
C. restless
D. escape
Modal Verbs › View
Look at the sing! You ______ take photos in the gallery.
A. Shouldn’t
B. Mustn’t
C. Needn’t
D. Don’t have to
