[ 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:
Grammar › ViewMr. Fu told me that he _______ come to the party.
A. may
B. might
C. can
Tenses › View
While Ms. Nhung was teaching in Class 4B, she ______ a piercing scream outside.
A. heard
B. has heard
C. was hearing
D. had heard
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
