问题

The manager was satisfied to see many new products ______ after great effort.

A:having developed
B:to develop
C:developed
D:develop;

正确答案是：

同类题型

The light bulb ______ by Edison in the middle of the1780s.

It was in the garden of her old house ______ she grew up ______ she dug up a pot of silver and gold.[ ]

I must be off now, but I hope we can _____ each other _____ letter[ ]

Nancy, who’s man on the playground— He’s my uncle, English teacher in No.1 High School.

_______the Second World war broke out?