[ Infinitive and Gerund ]
He was studying really hard today, he only stopped _____ to the toilet.
A. go
B. to go
C. going

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Grammar › ViewChoose the best verb: Next Monday, Jim __________ to China.
A. will go
B. was going
C. went
Grammar › View
Kate is busy. She __________________ for a test.
A. is study
B. is studying
C. is studies
Grammar › ViewWe have had the roof of our house______.
A. replace
B. replaced
C. to replace
D. been replaced
Grammar › View
A:Will the Smiths ______ a trip to Hualien by train next week? B:I’m not sure. Mrs. Smith wants to go there ______ plane because it’s much faster(更快的).
A. take; on
B. to take; by
C. take; by
D. to take; in a
