[ Grammar ]
They …. know if the floor is slippery.
A. is
B. am
C. are
D. were

Random Topics:
Passive Voice - Present ContinuousRelative Clauses and etcSimiles and Body IdiomsCohesive DevicesAdjectives & PrepositionAuxiliary Verbs & Question TagsAdjective & AdverbSentence Structure and ConjunctionsTOEFL Adjective and AdverbGerund & InfinitivesOther quiz:
Vocabulary & Grammar › ViewWe should ________ waste paper ________ cut down any trees.
A. either – or
B. either – nor
C. neither – nor
D. neither – or
Reported Speech › View
“Where did he go?”
-He asked where he _____
A. had gone
B. has gone
C. went
D. have gone
Grammar › ViewShe ___ her bicycle to work today.
A. ride
B. rode
Present Tenses › View
we _____ a lot of fun with the new vido games at the moment.
A. have
B. had
C. are having
D. were having
