The two girls had been talking in ________ low voice all ________ time during the meeting, which upset the manager.
26. If Tom’s wife doesn’t go to the party, _________.
25. You can put the medicine____you like, on condition that the children can’t reach it.
24. There were two boys in the lab,__________did the experiment successfully.
23. The customer didn’t choose______of the coats and went away without looking at a third one.
22.—How can I use this washing machine? —Well, just refer to the_______.