1．Could you say it again? I can’t understand __________ you are talking about.
A. how B. when C. what D. which
2．—Dad, would you please drive ?
— No hurry. We have enough time before the plane takes off.
A. faster B. more slowly C. more carefully
3．----Why do you speak in _________ a loud voice?
----Because I want to make myself ________ clearly.
A. such; hear B. so; heard C. such; heard D. so; hear
