[ Grammar ]
He is accustomed ________having his own office.
A. To
B. With
C. Of
D. In

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Vocabulary › Viewa scientific test to try out something in order to learn about it
A. eyewitness
B. firsthand
C. theory
D. experiment
Grammar › View
___ he arrives soon, we will have to start the conference without him.
A. Suppose
B. Provided
C. Unless
D. If
will, be going to, would like to › ViewWilliam and Richard …….. going to go to school
A. am
B. are
C. is
D. was
Vocabulary and Grammar › View
Be careful with your belongings as __________ is common in crowded areas.
A. pickpocketing
B. crime-free
C. safety
D. security