[ Gerunds and Infinitives ]
It’s so good ______my friends in difficulty.
A. helping
B. to help

Random Topics:
Simple Past TenseAdjectives and comparisonsLinking VerbsSo Such Enough TooAsking and Giving Opinionused to vs be used to vs get used toFuture Simple TenseCorrelative conjunctionsSpeculation with Modal VerbsGrammar - TOEICOther quiz:
Verbal Phrases › ViewWhat is the appositive phrase in this sentence?
Chemistry, Sue’s favorite subject, is easy for her.
A. Chemistry
B. is easy
C. for her
D. Sue’s favorite subject
Relative Pronoun › View
The boy …. phone is blue is my best friend.
A. who
B. whose
C. that