( ) My mother works _____ a bank . A. in B. on C. at
选择正确的选项,补全单词pr __ __ ticeA. acB. aaC. oc
Leaves change ____________ fall. A. inB. atC. on
Can yellow leaves ____________ food?A. makesB. makeingC. make
Leaves must ____________ green to make food for plants and trees. A. isB. beC. are
They ____________ sunlight,air,and water. A. needB. needsC. needes