.— We weren’t able to any new suggestions.— Don’t worry. We’ll try to figure it out.

I never thought she would _______ my invitation to the concert. —She would feel sorry for missing the concert someday.

You should cut up the meat _____ before cooking.

How does your father learn Chinese, Jim? —He learns it _____ listening to the radio.[ ]

It’s suggested that some activities to celebrate the 30th anniversary of the Reform and Opening-up.