______ well, you need to have a good sense of balance. 

—What a mess! You are always so lazy!—I’m not to blame, mum. I am ________ you have made me.

In peace, too, the Red Cross is expected to send help to__________there is human suffering.

The famous scientist grew up ________ he was born and in 1930 he came to Shanghai. 

—Which seat shall I take?—Please take ______ seat you like.