定语从句练习及答案1

Exercises: 1.There are three bedrooms in the house,_____ is Mary's. A the smallest  of which   B the smaller of which   C the smallest of them   D the smallest one  2.The Greens will move into the new house next Monday,_____ it will be completely finished. A by the time   B by which time  C by that time  D by this time 3.Alice has a large collection of phone,_____ was taken in london. A none of them   B no one of which   C all of which  D none of which 4.With the fast development of ag