America is a ________ country.A.develop B.development C.developing D,developed
---Do the Smiths live next door to you?---No, but they________.
How lucky Peter was! Some policemen arrived in time and_________ him out.
Boris has a good brain. In fact, I don't think that anyone in the class has________ IQ.
My cousin served in the army ________ when he was ________.
---Mum, when shall we go to the zoo?---Sorry, I will have a meeting today. ________ Saturday ________ Sunday is OK.