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:
Prepositions and Prepositional Phrases › ViewWhich sentence uses a prepositional phrase to show time?
A. The cat is under the table.
B. Before dinner, we will go for a walk.
C. She is taller than her sister.
D. He walked through the door.
Modal Verbs › View
Which of the following sentences uses “can” correctly?
A. You can to go outside now.
B. He can sing very well.
C. Can I to borrow your pen?
D. They can swimming later.
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
