When did your brother begin to show his interest in medicine —It was a Saturday he noticed his classmate experimenting on a frog in the lab.

With the good care taken by doctors and nurses, most patients injured in this traffic accident are beginning to ________.

_________, I’ve never seen anyone who’s as capable as Kate.

Alice, you look puzzled, Have you understood it?—Yes．I _____another problem just now

The manager is said to have arrived back from Paris where he _____ some European business partners.[ ]