Though having lived abroad for years，many Chinese still ________ the traditional customs.
| A．perform | B．observe | C．possess | D．support |
.The number of deaths from heart disease will be reduced greatly if people _______ to eat morefruit and vegetables.
| A．have persuaded | B．are persuaded |
| C．persuade | D．will be persuaded |
In _________eyes of children, playing on the Internet can only bring them ________great fun.
| A．the；a | B．不填；a |
| C．the；不填 | D．不填；不填 |
The keeper of the spring cleared away the leaves and branches, and wiped away the silt(淤泥) that would _______ have choked and polluted the fresh flow of water.
| A．thus | B．otherwise |
| C．therefore | D．later |
Most students are for the new school rule, which says all the students not take their cell phones into the classroom.
| A．will | B．can | C．shall | D．must |
He was admitted to our school two years ago, a top school in our hometown, _____ he has been crazy about reading electronic novels, killing time.
| A．after that | B．since that |
| C．after when | D．since when |