[ Time Clauses of Future ]
Don’t call the emergency number ______ it’s a real emergency.
A. unless
B. if
C. as soon as

Random Topics:
Passive Voice - Present TensesPresent Tense (Negatives and Questions)Gerunds, Infinitives and ParticiplesGrammar - help/have/let/makeAdjective ending with ED & INGDefinite and Indefinite ArticlesSentence Types and ConjunctionsPast Perfect and Past Perfect Continuous TenseModal SpeculationWH- Question WordsOther quiz:
Vocabulary › ViewIf you don’t know how to __________ a word, look it up in your dictionary.
A. spell
B. understand
C. learn
D. mean
Present Continuous Tense › View
The ship that transports goods … at this port of at 5:30 p.m.
A. Is arriving
B. Are arriving
Kathy was doing her homework.
Tom and Leila were watching TV.
I wasn’t doing anything.
A. Past simple
B. Past continuous
C. Past perfect simple
D. Past perfect continuous
Grammar › View
She wishes she ______ more money to buy new computer.
A. has
B. had
