--- Have you been spending too much money on clothes?--- ________. I have been always persuading myself not to buy expensive ones and trying my best to save money.
---- She looks happy. She ________ have passed the exam. ---- I guess so. It’s not difficult after all.
Scientists have to work hard to keep ________ with modern discoveries and developments.
The child was told to ________ for being rude to his uncle.
The two girls had been talking in ________ low voice all ________ time during the meeting, which upset the manager.
This theory is found to be in line with the experimental results. Which of the following is similar to the underlined words?