By the time Einstein was 14 years old, he ________ himself advanced mathematics.
A.has taught | B.taught |
C.had taught | D.was teaching |
Jane is______ researching into the life of wildlife and can’t spare time to care for his wife and children.
A.absorbed to | B.occupied in | C.engaged to | D.concentrated to |
The Browns wrote to Mrs. Anmary to______ her warm reception during the visit to her sanatorium.
A.acknowledge | B.consult | C.owe | D.evaluate |
My house is the only brick one on the street. It______ and you can’t miss it.
A.sticks out | B.holds out | C.looks out | D.makes out |
—Don’t you know your computer has been inflected with viruses?
— Really?No wonder it hasn’t_______ as properly as before.
A.managed | B.controlled | C.operated | D.appeared |
The three sisters decided to hold a family party to ______ their parents gold wedding.
A.welcome | B.congratulate | C.memorize | D.celebrate |