— The woman biologist stayed in Africa studying wild animals for 13 years before she returned. — Oh, dear! She ______ a lot of difficulties!
| A．may go through | B．might go through |
C．ought to have gone through | D．must have gone through |
Wilma became the first American woman to win three Olympic gold medals in track, ________ made her mother very proud.
| A．it | B．that | C．which | D．this |
She took her son, ran out of the house, _______ him in the car and drove quickly to the nearest doctor’s office.
| A．putting | B．put | C．to put | D．having put |
He has called several times this morning. _______, there is something very urgent.
| A．Really | B．Especially | C．Obviously | D．Terribly |
John talked with me for about an hour yesterday. Never _______ him talk so much.
| A．had I heard | B．did I hear | C．I had heard | D．I heard |
Mother told Jim to ______ the milk until it boiled and then turn off the gas.
| A．observe | B．watch | C．notice | D．glance at |