you must go and play football，at least wait until school is over．（ ）
| A． |
If |
B． |
Whether |
C． |
Unless |
D． |
So that |
I will see what I can do，but I can't ______ you anything．（ ）
A．planB．prepareC．promiseD．protect
Anita spoke _________ quietly that I could hardly hear her．（ ）
A．tooB．suchC．soD．very
When you are home，give me a call to let me know you __________ safely．（ ）
A．arrivedB．have arrived
C．will arriveD．are arriving
My cousin works for an airline．He flies planes．He is __________．（ ）
A．an inventorB．a scientist
C．an explorerD．a pilot
If someone is in your way，you should say" ___________"and be polite enough to wait till he or she moves．（ ）
A．excuse meB．I'm sorryC．thank youD．never mind