[ Tenses & Passive ]
This exercise __________ carefully
A. must do
B. must be doing
C. must done
D. must be done

Random Topics:
Parallel Structure or Combining SentencesTenses and Passive VoiceAnalogySentence Types and ConjunctionsConjunctivesNouns FormationInfinitive FormsPast or Present Verb TenseActive vs. Passive VoicePossessive PronounsOther quiz:
Grammar › ViewDon’t forget __________________ my letters, please.
A. to post
B. posted
C. posting
D. post
Sentence and Fragment › View
The dog belonging to the old lady on the corner of the street barks constantly.
A. Complete Sentence
B. Fragment
. What is the function of the preposition ‘in’?
A. It indicates that something is inside a space or area.
B. It shows the direction of movement.
C. It describes a relationship between two nouns.
D. It indicates the time something happens.
Vocabulary and Grammar › View
Scientist use _ very strong telescope to help them look fat out into space.
A. a
B. an
C. the
D. any
