My sister, who is______a red sweater now, ______a foreigner for 3 years.
______more information ,write to the address below.
If you______the right map , we wouldn’t have got lost.
—Which umbrella can I take? —You can take______of them; I will use none.
Living in the desert involves a lot of problems,______water shortage is the worst.
Only when you have obtained enough data______ come to a sound conclusion.