[ Grammar ]
______ they invent a phone in 1890?
A. Do
B. Are
C. Did
D. Is
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Grammar › ViewHe always …………………. football on Friday.
A. Plays
B. Play
C. Would play
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Grammar › View
I can’t tell ＿＿＿ the box is open. Can you take a look for me?
A. what
B. if
C. ╳
D. who