教师在教学前要回答三个问题：①教学目标是什么？②选择什么样的教学策略和教学方法？③选择什么测验手段？这体现教师（ ）角色。

(单选题)—What do you think of French?—In my opinion, French is _____ (单选题)—Jack, you erase the blackboard today, ______?—But I did it (单选题)It is ______ for him to get to school on time, because it is (单选题)Standing on the top of the Oriental Pearl TV Tower, ______ a (单选题)Large amounts of water ______ in the past five years. (单选题)The country has sent up three manned spacecraft, the most re (单选题)I find painting and listening to music ______. (单选题)______ 6 world powers have accepted ______ Iranian offer for (单选题)—Why is the cake so expensive?—Maybe you don’t know a cake m (单选题)In order to enhance market competitiveness, we welcome any c