[ Adjectives with Preposition ]
The teachers are worried ______________ their students
A. of
B. at
C. in
D. about

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Grammar › View___________any butter left?
A. Is there
B. There isn’t
C. Are there
D. It is
Grammar › View
We _________________ (have) a computer when I was a child.
A. was having
B. had
C. did had
D. have
Vocabulary › Viewunaware of; unconcerned; inattentive
A. spontaneous
B. dogged
C. keen
D. oblivious
Present Perfect › View
Why ______ (Elena, not try) other treatments for her back pain?
A. has Elena not tried
B. did Elena not try
C. is Elena not trying
D. does Elena not try
