سلام عليكم
شوية Choose معاكو اهو حلو يلا 
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1-I(have sent -sent -had sent-will sent) you an e-mail earlier this morning.
2-The fire(was not -didn't-weren't-couldn't)put out until the firemen had arrived.
3-Mona (works-is working -has worked-had worked) at Ain Shams hospital on Thursdays and Fridays .
4-People (continued-continue to-continuing to-have continued to)work when they are older for many reasons.
5-She used to have long hair but now she(isn't-doesn't-wasn't-couldn't)