There are five pairs _________, but I’m at a loss which to buy.
The girl, when _____ why she _____ in the exam, just lowered her head and kept silent.
Mary dropped the vase, but her mother stared at her _____ she had done something clever.
–When did Tom, head of this famous international corporation, stand trial in open court ?–It was on Thursday _____ you were in Beijing.
Their love _____ quickly over the months that followed after they met in a dating show.
.At the ceremony, the president delivered a thank-you speech _____ the company.