Do you think you could ______ his voice on the phone?

–How was your trip abroad?–Great. The only pity is that I ______to buy some gifts for my friends.

—Have you known Dr. Jackson for a long time?—Yes, since she________ the Chinese Society.

In recent years, great changes have taken place in the city of Wenzhou. As we can see, many streets and roads_______.

When and where to build the new factory ___ ________ yet.