Students examined how childrena______language.
A bee has stung my hand and it is __________________（膨胀）up
The lung is an o________________ and so is the heart.
An __________（精确的） instrument is able to give you information that is correct to a detailed level.
He felt g________________ after he stole some money from the old couple.
If you have an a__________ with someone，you have arranged to see them at a particular time，usually in connection with their work.
Keeping an o    state of mind is good for health.
It'll be two years before the________(过程)is complete.
She said it d     to challenge me.
We should_________(应用)both theories in the language classroom.