[ Gerund ]
This morning, i spent 30 minutes….. this document.
A. to check
B. checking

Random Topics:
First Conditional SentenceIrregular Plural NounsModals and Comparative SuperlativeAdverbs (manners & modifiers)Conjunctives-ing / InfinitiveGrammar - Punctuation of SentencesThe First Conditional SentenceVerb Tenses and ModalsCountable and UncountableOther quiz:
Phrasal Verb › ViewIf I can get ________ all my homework assignment, I’ll go to the cinema.
A. on well
B. through
C. of
D. away
Vocabulary › View
What is the primary function of a hydrant?
A. To generate electricity
B. To record historical events
C. To provide water access
D. To synchronize activities
Phrasal verbs and Prepositional Phrases › Viewknow sth by watching the news
A. hang up
B. on the news
C. log off
Future Tenses › View
I promise I ____ for the test this afternoon.
A. am studying
B. will study
C. am going to study