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I am so tired，for I ________ English for 2 hours.

John Wood，an Internet blogger，discovered that Samsung ________ for not protecting its workers from a dangerous chemical used on its phones.

My mind wasn't on what he was saying，so I'm afraid I ________ half of it.

All the preparations for the task ________，and we're ready to start.

Selecting a mobile phone for personal use is not an easy task because technology ________ so rapidly.

Visitors ________ not to touch the exhibits.

—Sorry，sir，your car isn't ready yet.
It ________ by our workers.
—Oh，my God，when can I come to fetch it?

If their marketing plans succeed，they ________ their sales by 20 percent.

The wet weather will continue tomorrow when a cold front ________ to arrive.

We first met on a train in 2010，but we both felt immediately that we ________ each other for years.