My father always has_____ sleep after lunch so he can work better in the afternoon.How many expressions can be used here ①a bit ②a little ③a bit of ④a little bit

I’m sorry to hear that her mother has passed _________ [ ]

Leaders of many countries have been trying to __________ what it is that makes China develop so fast.

The toughest thing about success is ________ you have to keep on being a success

Forgotten something I can keep an eye on your kidsif you want to go and get it—______