Rewrite: “If he does not pay careful attention to lessons, he cannot keep pace with his classmates.”
A. Unless he pays careful attention to lessons, he cannot keep pace with his classmates.
B. Unless he pays careful attention to lessons, he can keep pace with his classmates.
C. Unless he does not pay careful attention to lessons, he cannot keep pace with his classmates
D. If he pays careful attention to lessons, he cannot keep pace with his classmates

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Gerunds, Infinitives and Modals of Possibility › ViewHe ___ come to the party, but he hasn’t decided yet.
A. might
B. has to
C. must
D. should
Grammar › View
What is the simple subject in the following sentence?
Two beautiful goldfish in the pond were eating the insects on the top of the water.
A. beautiful
B. eating
C. goldfish
D. water
Rewrite the sentence in passive voice in past simple tense: She could solve the problem.
A. She was solving the problem.
B. The problem was solved by her.
C. The problem could be solved by her.
D. The problem was solving by her.
Grammar › View
Let’s go away next weekend, _____ we?
A. will
B. shall
C. should
