— It's so cold today.
— Yes, it's colder than it was yesterday.
| A．some | B． more | C． very | D． much |
It was not until he came back _____ he knew the police were looking for him.
| A．which | B．since | C．that | D．before |
His uncle went abroad in 2010, and _______since.
| A．has not been heard of | B．had not been heard of |
| C．had not heard of | D．has not heard of |
His letter was so confusing that I could hardly make any ______ of it.
| A．explanation | B．meaning | C．sense | D．guess |
Do you know the man from ________ house the pictures were stolen？
| A．which | B．that | C．what | D．whose |
All her time _______ experiments, she has no time for films.
| A．devoted to do | B．devoted to doing | C．devoting to doing | D．is devoted to doing |