Mary is ________ someone might recognize her.
——Did you find the missing couple in the mountain yesterday?——No, but we _____ to get in touch with them ever since.
I think you should go back to your _____ plan, which is much more practical than the present one.
——Jim is addicted to novels recently.——Yes, that might _____ why he did so badly in the last test.
I was surfing the Internet _____of successful rendezvous and docking of Shenzhou-VIII and Tiangong-I.
No one expected house prices to fall, but _____ that's exactly what happened.