选择正确的短语填空:keep in touch with / long for / keep silent / worry about / not only1. Many people____________their children's friend circles.
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选择正确的短语填空:keep in touch with / long for / keep silent / worry about / not only2. In the past, it was a small stamp that helped family members and friends to __________ each other.
选择正确的短语填空:keep in touch with / long for / keep silent / worry about / not only3. And they can also_________ in a friend circle.
选择正确的短语填空:keep in touch with / long for / keep silent / worry about / not only4. People could________ read words, but also hear each other's voices.
选择正确的短语填空:keep in touch with / long for / keep silent / worry about / not only5. They want to follow the time closely, but they also ________ peace of mind.