[ Grammar ]
He ___ (write) an email when his colleague came to his desk.
A. write
B. writing
C. was writing
D. wrote
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Present Tenses and Connectors › ViewThe computer ___ not working.
A. are
B. does
C. don’t
D. is
Grammar › View
What is a verb that helps the main verb in a verb phrase
A. action verb
B. helping verb
C. linking verb
D. adjective