.To help today’s customers make a choice, a company in New York _____a video tro

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.
To help today’s customers make a choice, a company in New York _____a video trolley — a supermarket trolley with a video screen to display advertisement and price information.

A．has invented

B．had invented

C．invents

D．is inventing

答案

解析

略

举一反三

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In the rainforest of the Amazon, 50 to 150 plant species _____ every day.

A．have been destroyed

B．are destroying

C．are being destroyed

D．destroyed

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We won’t know how much food to buy until we decide how many people ________.

A．were coming

B．are coming

C．have been coming

D．had come

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My brother left home five years ago. I _______ nothing from him up to now.

A．hear

B．heard

C．have heard

D．had heard

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The day — my birthday — I had been looking forward to _______ at last.

A．come

B．coming

C．has come

D．came

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Every pupil is ______to be in the classroom at 7.am.

A．supposed	B．being supposed
C．supposing	D．to suppose

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