3.As the years passed， many occasions―birthdays， awards， graduations ____ with Dad’s flowers.
| A．are marked | B．were marked | C．have marked | D．had marked |
Simon has lived in Spain for more than 10 years, but _______ enough, he can’t speak a word of Spanish.
| A．personally | B．curiously | C．unfortunately | D．initially |
Many parents prefer kindergartens to spend more time teaching math and Chinese to help their kids _______ an early lead in primary school performance.
| A．bring up | B．take up | C．build up | D．add up |
A new study finds that sitting can shorten a person’s life almost as much as smoking can, which _______ just how damaging inactivity can be.
| A．estimates | B．highlights | C．dominates | D．ensures |
The policy will _______a chain reaction of automatic spending cuts that can lead to thousands of job losses.
| A．set down | B．set off | C．set out | D．set about |
Landing safely in bad weather is a _______ task for any pilot, and even the smallest error can lead to a disaster.
| A．tricky | B．secure | C．significant | D．easy |