Jackie made _____ possible for this family to have beautiful memories during hard time.
| A．it | B．this | C．that | D．what |
We go to school ____ a bike.
| A．in | B．on | C．by | D．ove |
It happened ____ the Long March.
| A．during | B．in | C．at | D．for |
The window is never opened ____ in summer.
| A．but | B．except | C．except for | D．but for |
Nobody knows it ____ me.
| A．except for | B．except that | C．besides | D．but |
I don' t think Xiao Li is ____ the other students ____ mathematics.
| A．after, on | B．after, with | C．behind, in | D．behind, at |