[ Grammar ]
____ it rains tomorrow, the learning trip will be cancelled.
A. If
B. Unless
C. Until

Random Topics:
Modals and Semi-ModalsComperative and SuperlativeSubject and Verb AgreementComparative Adjectivewill, be going to, would like toIntermediate GrammarThe Structural Types of SentencesRelative Clauses and etcDefinite and Zero ArticleFuture Continuous TenseOther quiz:
Grammar › ViewWe have a break ________ 10:30 _________ 10:45 _________ the morning.
A. from / to / in
B. at / at / in
C. at / and / in
D. at / from/ to
Modal Verbs › View
He ____ speak three languages fluently.
A. can
B. must
C. should
D. might