We may find that learning a foreign language does not have to be________learning our mother tongue,but can in fact be twice ________.
—I’ll repeat the phone number: 0571-88145412. Can you catch it? —________.
It was ________ of my secretary not to have let others disturb me this morning when I was occupied with my work.
“Without Chinese toys, kids around the world ________ not have so much happiness.” said an European Union official.
I was lucky enough to get on the train before it ________.
The man must be the leader of the group, easily ________ by his special uniform.