She arrived early in order to get a good seat.
A：in case of
B：so that
C：so as to
下列一元二次方程中，没有实数根的是（ ）
—________ the socks Lily's? —No，they're ________．
— Are you cleaning my room, Serena?
— ______. I can't bear seeing your room in a mess!
下列对学习动机认识正确的是（ ）
①学习动机是推动我们努力学习的动力
②与内在的学习动机相比，外在的学习动机更能促使我们积极主动学习
③学习动机不强，有可能会产生厌学情绪
④培养学习动机，首先要确立合适的目标
