[ Grammar and Vocabulary ]
Change to the passive: They’re developing new computer software.
A. A new computer software is being developed.
B. A new computer software is been developed.

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Grammar › ViewThis is a dangerous tour. Children _______ be accompanied by an adult.
A. must
B. has to
C. don`t have to
D. mustn´t
Noun Verb Agreement › View
Although some people leave after a week, many _ longer.
A. stays
B. stay
Grammar › ViewHe could read a book when he was five, ________
A. could he?
B. did he?
C. couldn’t he?
D. didn’t he?
Grammar › View
Mary said, “I didn’t take your book.”
A. Mary said that she hadn’t taken my book.
B. Mary said that she didn’t take my book.
C. Mary said that she hasn’t taken my book.
D. Mary said that I didn’t take my book.