连词成句
1.you, what, hear, can (?) ___________________________
2.can, a, I, train, hear (.) ______________________________ 
3.eyes, its, green, are (.) ______________________________
4.are, lemons, sour(.) ________________________________
5.is, it, round, red, and (.) _____________________________
6. it , and,  yellow , long, is________________________
7.is, it, lemon, a (.) _______________________________
8.it, is, how(?) ____________________________________
9.it, is, what(?)____________________________________