[ Present Perfect Tense ]
Eva, Thomas, and Robert … Hong Kong many times.
A. Kong many times.
B. been to
C. have been to
D. has been to

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Tenses › ViewBy the time the bus arrives, I _______.
A. will have waited for two hours
B. had waited
C. am waiting
D. will wait
Simple Present Tense › View
The telephone____twice the day.
A. ringes
B. ring
C. rings
D. ringing