Her name is Gina Green. Her last name is __________.

Seeing the car trapped in the snow drift, the driver didn’t know ______ it

This history book is of great value.—Exactly. However, can be enjoyed from it you have a deep understanding of it.

English is ________ difficult for me to learn than Chinese.

The traffic is heavy these days. I ____ arrive a bit late, so could you save me a place?[ ]