[ Commas and Subordinating Conjunctions ]
Which sentence correctly uses a comma?
A. I met an interesting person, while attending the conference last week.
B. I met an interesting person while attending the conference last week.

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Prepositions and TensesPresent Simple, Present Continuous or Present PerfectPresent Progressive (Future)Future Perfect ContinuousGrammar of Future PlansVerbs and PrepositionsModals and AdvicePRESENT SIMPLE vs PRESENT CONTINUOUS + QUANTFuture SimplePast simple - Irregular VerbsOther quiz:
Grammar › ViewIs this sentence correct?
The school day had ended; but I still had to go to practice.
A. yes
B. no
Grammar › View
I want to be….. best luck.
A. a
B. an
C. the
D. X
Grammar › ViewI __________(win) the Nobel Prize.
A. am going to win
B. am winning
Modals of Obligation › View
I … my jacket to the concert, but I had no idea it would be so warm – in the end I had to carry it the whole night.
A. Needn’t have taken
B. Didn’t need to take
C. Don’t have to take
D. Needn’t take
