[ Grammar ]
Gas particles move when the gas is hot than when it is cold.
(A) fast
(B) faster
(C) as fast
(D) fastest

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Tenses and Structure › ViewIdentify the correct verb tense: ‘They (to be) friends for years.’
A. are
B. were
C. will be
D. have been
Tenses › View
I … to visit London next month.
A. am going
B. will go
Grammar › ViewIt is very hot. We can’t work outside.
A. It is too hot for us to continue to work outside.
B. It is too hot that we can’t continue to work outside.
C. it is too hot for we to continue to work outside.
Grammar › View
What is the direct object?
John paid the bill for us.
A. John
B. paid
C. bill
D. us
