[ Modal Verbs ]
You ______ touch this. It’s very hot!
A. mustn’t
B. must
C. don’t have to

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Grammar › ViewMy car is faster ______ his motorcycle.
A. The
B. Then
C. Thin
D. Than
Adverbs › View
Barack Obama campaigned _____ (success) Hillary Clinton, so he got the Democratic nomination for President and went on to win the election.
A. as successfully as
B. more successful than
C. more successfully than