_____, Carolina couldn’t get the door open.
Lily’s mobile phone was left in a taxi accidentally,never______again.
Hearing his words,I couldn’t decide ______or remain.
The man we followed suddenly stopped and looked as if ______ whether he was going in the right direction.
Tom pretended______it but in fact,he knew it very well.
Without facts,we can’t form a correct opinion,for we need to have actual knowledge______our thinking.