I took mathematics and physics because I think that _______very important for me to make furtherresearch in this field.[ ]

There are too many students asking teachersto help in the teachers’ office, but this room is ____ small ____ hold them.

The plane arrived at London airport ______Wednesday.

We used to work in the same office and we_________ have coffee together.

填入下面空缺处的语句，最恰当的一项是（ ）我需要清静……最好去处是到个庙宇前小河旁边大石头上坐坐， 。雨季来时上面长了些绿绒似地苔类。雨季一过，苔已干枯了，在一片未干枯苔上正开着小小蓝花白花，有细脚蜘蛛在旁边爬。