――How many children are there in your family ?――So many there used to be, but now I am_______ an only child.
—Which book can I take? —You can take ___________book you like.
Of the two American students, Lily is ___________one.
Choose the correct structure of this sentence “He gave Laura a present.”
I’m ___________to see the baby’s ___________ ability in music.
The number of the cranes is getting ______.If we don’t help them, they will disappear ________a few years.