We need to _____ how we are going to get there.
You should ______ him to be innocent until he is proved guilty.
After the long journey, the three of them went back home, ______ .
Though he started late, Mr. Guo played the piano as well as, if ______ ,you do.
After recovering from his illness, he was advised to ______ gardening as a hobby.
Weather ______, we'll go out for a walk.