The principal called us to his office but I couldn’t go.
A. The principal called us to his office but, I couldn’t go.
B. The principal, called us to his office but I couldn’t go.
C. The principal called us to his office, but I couldn’t go.
D. No commas needed.

Random Topics:
ArticleModals and TensesPresent Simple and ContinuousPhrases and ClausesModals and Semi-ModalsAsking & Giving AttentionSimple Present and Present ContinuosModals - Reported Speech - ConditionalsQuestion TagsPresent Simple & ContinuesOther quiz:
Present/Future/Past Simple/Present Perfect › ViewThey didn’t collected enough books and clothes for their volunteer programme yet.
A. A. books
B. B. for
C. C. didn’t collected
D. D. yet
Time Clause › View
Only after she _______ from a severe illness did she realise the inportance of a good health.
A. would recover
B. has recovered
C. had recovered
D. was recovering
Grammar › ViewI’m not sure but I think I ___ my exam.
A. will not pass
B. am not going to pass
Vocabulary › View
What is the definition of coveted?
A. The process of conveying information without using speech
B. Desired
C. A fixed allowance for food consumption usually during a shortage
D. Advising
