If the patient doesn’t feel better tomorrow, he’ll have an operation.
A. Unless the patient feels better tomorrow, he won’t have an operation.
B. Unless the patient feels better tomorrow, he will have an operation.
C. Unless the patient feels better tomorrow, he has an operation.
D. Unless the patient feels better tomorrow, he is going to have an operation.

Random Topics:
Verb-ing and InfinitiveTenses and Passive VoicePassive Voice in Past Simple TenseConditional TypesPassive Voice - Past SimpleDegrees of AdjectivesPast Simple (to be)Past Simple VerbsAlong & AgainstSimple Present and Past TensesOther quiz:
Grammar › View-… did you arrive? -At about six o’clock.
A. When
B. What
C. Why
Present Continuous for Future › View
We already have a plan, we
A. are riding our mountain bikes this weekend.
B. will ride our mountain bikes this weekend.
C. ride our mountain bikes this weekend.
Grammar › ViewIdentify the pronoun(s) in the following sentence:
Many of the tiny parts are designed for an exact fit.
A. Many
B. tiny
C. designed
D. fit
Vocabulary and Grammar › View
Luke appreciated ____ to work, as he didn’t have a driving licence yet.
A. driving
B. be driven
C. being driven
D. having driven
