[ Grammar ]
It’s a difficult problem. It needs …….. about carefully.
A. think
B. to think
C. thinking

Random Topics:
Modals of AdviceModal Verb in Passive VoicePrepositions - ConjunctionsQuantifiers with NounsModals of DeductionDemonstrative PronounModals Posibility and ProbabilityPresent Tense (Negatives and Questions)Simple Compound and Complex SentencesPresent Continuous TenseOther quiz:
Vocabulary › ViewMany ___________ are celebrated with large feasts.
A. fortune
B. festivals
C. flattering
Idioms › View
At this moment, it’s nonsense to look ___ results.
a. about
b. for
c. in
My uncle ………. me a modern laptop last new year.
A. bought
B. was bought
C. have bought
D. to bought
Grammar › View
_____of these books have you read?
A. What
B. Whom
C. Whose
D. Which
