[ Vocabulary ]
make certain that (something) shall occur or be the case.
A. fusion
B. attempt
C. ensure
D. maintain

Random Topics:
Modals and PhrasesGrammar- Later/LatterPerfect ModalsComparisonsCountable QuantifiersModals for Necessity and SuggestionsParts of SpeechClause Markers TOEFL GrammarQuantifiers & Modal VerbsModal Verbs and PermissionOther quiz:
Grammar › ViewMy father _____ _____ __ ___ us a new car next month.
A. isn’t going to buy
B. isn’t going buy
C. isn’t buy
Modal Verbs › View
They _____________________ go to school today. It’s Thanksgiving.
A. Must
B. Mustn’t
C. Needn’t
Idioms › ViewI get bad feelings about him.
a. vibes
b. valuables
c. vitals
Grammar › View
I had arranged to meet Kate, but I was late. When I finally arrived, she was waiting for me. She was annoyed because …………. such a long time.
A. she’d been waiting
B. she was waiting
C. she has been waiting
D. she had waited
