[ Grammar ]
I invited Mary to go for a walk, but she refused _____ us because she was busy.
A. join
B. joining
C. to join
D. to joining

Random Topics:
Modals Deduction: cant /mustAdjectivesPRESENT SIMPLE - CHILDRENPresent Perfect, Present Simple, Present ContinuousConjunctionComparatives, Superlatives, and ModalsVerb to Be Tenses & Object PronounNouns FormationModal and Phrasal VerbsArticles and PronounsOther quiz:
Modals › ViewA: I am really hungry.
B: ______ we go out and eat pizza?
A. May
B. Would
C. Must
D. Shall
Grammar › View
The cat __________ in front of the fire.
A. isn’t sleep
B. isn’t sleeping
C. not sleeping
Grammar › ViewChris intends ……………….participate in a charity event.
A. whether
B. to
C. on
D. that
Present Perfect Tense › View
Haven’t you _______ your meal yet?
A. finish
B. finishing
C. finished
D. been finish
