她是真的难过,还是只是在装模作样?
Was she really upset or was that just an ___act?
对游客的友好欢迎常常只是装出来的。
The friendly welcome for tourists is often just an ___act.
他保持着冷静的伪装来隐藏自己的焦虑。
He maintained a calm ___act to conceal his anxiety.