He said he _______for Beijing the next day.

By the 1920s, Howard Carter ____ an explorer.

My cousin is sometimes. It’s hard for him to change his mind even though his idea is not right.

When he was alive, the old scientist used to say that knowledge ＿＿＿＿from practice and he gained his experience by doing a lot of practical work

She has already tried her best. Pleasedon’t be too ______ about her job.