First aid is a temporary form of help to someone who suddenly falls ill or gets ——before a doctor can be found.
The way he did it was differentwe were used to .
Some researchers believe that there is no doubt ______ a cure for AIDS will be found.
The place _______ the bridge is supposed to be built should be________the cross-river traffic is the heaviest.
The shopkeeper did not want to sell for ________ he thought was not enough.
Danby left word with my secretary ________ he would call again in the afternoon.