"Often we find that people who are quite shy have a very small circle of friends. They stick with safe situations ___（1）___ they know people well. And then if their very best friend moves out of town, they can feel high and dry, ___（2）___," says Walker.
How do you expand your social network? Like any skill, cultivating new friendships takes ___（3）___. Walker suggests starting ___（4）___ smaller challenges. Interact more with the people you see around you every day. "Often people who are shy imagine they have to ___（5）___ to a bar to meet people. But that's not a great place to meet people. Often it's a good place to meet troubled people," he says. Instead, initiate conversations with classmates you haven't spoken___（6）___before. Ask how their weekend was. ___（7）___ say hello to your neighbor and mention how great his lawn is looking. Compliments, when warranted, are a wonderful way to break the ice.
The next step is ___（8）___ slightly more ambitious plans for ___（9）___ friendships by extending invitations to people whom you would like to become more friendly with. Don't start off by inviting three couples or so to your home for a lavish dinner party. You'll ___（10）___ too much pressure on yourself. Instead, perhaps invite another couple along to see a movie you think they'd enjoy. Setting these kinds of modest goals can help extend your social circle in a low-pressure way.
（6）下列正确的是（ ）

A.about

B.of

C.out

D.to