[ Vocabulary and Modals ]
You _______ stop when the traffic lights turn red.
A. can
B. should
C. must
D. could
Random Topics:
Present Simple Affirmative and NegativeInfinitive FormsVerb + Infinitive or Gerundwill, be going to, would like toAdverb of FrequencyConditional SentencesMust / must notPronouns and AntecedentsPresent Perfect Simple vs ContinuousComparatives - SuperlativesOther quiz:
Prepositions › ViewI have been studying ___ half an hour.
a. until
b. since
c. for
Modal Verbs › View
In most developed countries,it is not necessary for people to boil water before they drink it.
A. In most developed countries,people ought to boil water before they drink it.
B. In most developed countries,people must boil water before they drink it.
C. In most developed countries,people needn’t boil water before they drink it.
D. In most developed countries,people mustn’t boil water before they drink it.
Future Tenses › ViewYou must take an umbrella. It ……….
A. is raining
B. is going to rain
C. will rain
D. rains
Subject Verb Agreement › View
It (keep, keeps) on reflecting itself on the water’s surface.
A. keep
B. keeps