[ Subject-Verb Agreement ]
He (is, are) reading about space travel.
A. is
B. are

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Grammar › ViewUse passive voice in simple present or simple past to complete the sentence.
Many schools (8) ________________(build) in poor areas each year.
A. are built
B. were built
C. are builded
Modal Verbs › View
Find a similar sentence:
My parents made it obligatory for me to stay home on weekdays.
A. I can’t stay home on weekdays.
B. I should stay home on weekdays.
C. I have to stay home on weekdays.
D. I’m able to stay home on weekdays.
Grammar › ViewIf we ……… littering, the environment will be polluted.
A. turn off
B. go on
C. go to
D. turn on
Grammar › View
We ………… the job sooner if you hadn’t wasted time
A. might have finished
B. will finish
C. have finished
D. did finish