[ Grammar ]
You have to be diligent ____ you will lag behind.
A. or
B. and
C. but
D. unless

Random Topics:
Active & Passive VoiceRoot WordSecond ConditionalBe going to / WillGrammar - PunctuationModal VerbsGive, do and makeModals for DeductionPreposition on TimeQuestion WordsOther quiz:
Preposition of Time › ViewJim had a terrible journey to Wales _________Christmas Eve 2003
A. on
B. at
C. since
D. for
Vocabulary › View
The Independence Day __________ was full of fireworks and music.
A. cupboard
B. dining room
C. celebration
D. weekend
Simple Past Tenses › ViewHe ___ to work by bus yesterday.
A. goes
B. gone
C. went
Future Tense › View
A: What are your plans for the weekend?
B: I ____ my Maths project.
A. will do
B. ‘m doing
C. am going to do
D. will be do
