[ Grammar for TOEFL ]
Scientists at the medical center is trying to determine if there is a relationship between saccharine and cancer.
A. is trying
B. to determine
C. is
D. saccharine and cancer

Random Topics:
Past Simple and Past Continuous TensesModals of Speculation and DeductionPrepositions and ConjunctionsConditional Sentence Type 2 and Type 3Verb + InfinitiveTensesAsking & Giving AttentionModal ProbabilityQuantifiersInterjection & Prepositional PhrasesOther quiz:
Tenses › ViewIt … tomorrow.
A. rain
B. rains
C. does not rain
D. will not rain
If Conditional › View
I would never lend to you if I … (know) before.
A. know
B. knows
C. knew
D. had know
Present and Future Tenses › ViewApply the correct future form in the following sentence: ‘I _______ go to the beach tomorrow.’
A. will
B. should
C. might
D. can
Parts of Speech › View
Select the word in the sentence that correctly responds to the part of speech in the brackets.
A warm breeze crept over the land. (adjective)
A. A
B. Breeze
C. Warm
D. Over
