[ Tenses ]
They ______ for five hours before reaching the mountain.
A. climb
B. were climbing
C. had climbed
D. had been climbing

Random Topics:
Adjectives & PrepositionsPassive and Active VoiceArticles - rulesCan, Could, May, MightIf ConditionalsTypes of Sentence StructuresClausePast Simple and Past Continuous TensesGrammar (want to/ need to/ have to)Sentence CompletionOther quiz:
Vocabulary & Grammar › ViewWe should ____________ our customs and traditions wherever we live.
A. respect
B. break
C. allow
D. take
Grammar › View
What is the meaning of the suffix “-less”?
A. more
B. full of
C. in a way
D. without
Grammar › ViewThe news _______ not very good yesterday.
A. is
B. are
C. was
D. were
Grammar › View
I ______ to the museum every Sunday, but I ______ go this week because of the weather.
A. go / am not going to
B. went / don’t
C. am going / didn’t
D. will go / didn’t
E. go / won’t go
