[ Tenses ]
By the year 2030, they _____ (invent) a device for doing homework.
A. will have invented
B. will be inventing
C. will invent
D. are going to invent

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A. bigger
B. biggest
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When do we use: ‘in’?
A. Months, seasons, years, centuries, etc.
B. Precise Time
C. Days, dates
D. All above
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Always dress …… when you go walking (comfortable)
A. comfortable
B. comfortably
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The grass looks wet because it _______________ .
A. has been raining
B. has rained
