--- Did that book give the information you needed? --- Yes, but ______, we had to read it almost entirely. 

（2014重庆一中高三下第三次月考）8. — What’s up?— There are so many problems _____.【考点】考察动词remain的用法

The radiation amount of a mobile phone for two half-hour periods per day is equal to ______ to an X-ray for ten seconds.

The foreign guests ,____ by some artists , came out of the hall .

In order not to be disturbed ,I spent three days ________ in my study.