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In much of the animal world, night is the time ____ for sleep —pure and simple.

It is said that the engines of Flight MH370____while flying over the Indian Ocean,with all on board killed .

This company is going to ________some 160 employees because of the drop in sales.

I spent the whole day repairing the motorbike. The work was ____ simple.

It doesn’t _______ if you are late to my party. I just want you to come.

-- How wonderfully Huang Bo performed at the 2014 Spring Festival Gala!
--Yes, It _________ my memories of his films.

Don't worry. It's just          a regular blood test. It'll finish within seconds.

Meeting again by chance, Lucy and Amy are delighted to       the friendship where it left out years ago.

In fact fuels we burn and plant food we eat ________ their chemical energy in the form of heat.

Chengdu has focused on improving the surrounding countryside, ________ encouraging large­scale city expansion.