The president stood by a window inside the room, ____, looking over the square.

Unless you work as hard as you can, you won’t ______ your classmates.

下列语句中,语言表达恰当得体的一项是:（ ）

A communicative satellite________________ as much as 3.5 tons was sent up into space last week.

Are you sure you can do well in tomorrow’s test, Lucy — . I’ve got everything ready.