<prompt> Translate the following text to EnglishNadhani alikuwa na kwenda kuamka kutoka kiti chake, lakini alibaki ameketi, ingawa ajabu vizuri alitenda kujieleza ya mshangao aliongezeka juu ya uso wake.  <response>: I half thought he was going to rise from his chair, but he remained seated, although a remarkably well acted expression of astonishment rose on his face. 