---- Do you know how to prevent (预防) the H7N9 flu?
---- You can ask the doctor for some ________.
A．snacks B．suggestions C．plans D．gestures
He was riding to school it began to rain.
A．as B．so C．while D．when
---What ________ he say to you just now?
---He told me that he ________ his key in the room.
A．did; leave B．does; left C．did; had left D．do; had left
I love the dress. It’s ________.
A．out of style B．in style C．inthe style D．out style
Teachers often tell us in the river after school.
A．don’t swim B．not swim C．not to swim D．swim
____________ they are brothers, they look like each other.
A．Because B．Though C．When D．So
