Grammar in Context 3, Seventh Edition Unit 1 INSTRUCTIONS: Complete each sentence with the present form of be. Ex: Timothy Doner isn’t a native speaker of Arabic.

Why the Gardners (not teach) Washoe to speak?

I haven’t used my bicycle _______ weeks.

INSTRUCTIONS: Read the four sentences. Three are correct. One is incorrect. Choose the incorrect sentence.

Monica ________ (lose) her wallet this morning. 

What country you (come) from?

My friends and I ____________ (speak) English together.

What potential drawback is associated with physical wedges?

The major advantage of IMRT over conventional 3D CRT treatment techniques is that:

Qualities of a good bolus material include all except: