[ TOEIC Grammar and Vocabulary Review ]
The researchers ………………….. hard to develop a perfect new model over the last two years.
A. work
B. worked
C. are working
D. have been working
Random Topics:
Gerunds in SentencesComparative AdjectivesPast Simple vs Present SimpleVerb AbilityGrammar - FragmentsWill or Going toWish, Unless, If sentenceTenses & PrepositionPast ContinuousTo Infinitive or Bare InfinitiveOther quiz:
Grammar and Vocabulary › ViewDon`t worry mom. I ______ to call you.
A. won`t forget
B. don`t forget
C. am not going to forget
D. am not forgetting
Vocabulary › View
He is valued and appreciated by everyone who knows him.
A. Reliable
B. Loyal
C. Respected
D. Honest
Grammar › ViewI haven’t been to the beach the _______summer.
A. every
B. all
C. whole
D. each
Conditional Sentences › View
If I go on a diet
A. I’ll buy you some sweets.
B. I’ll lose weight.
C. we’ll go for a picnic.