“你确定吗？”“我想你是对的。”

"Are you sure about that?" "___I ___suppose you're right."

“我能用你的手机吗？”“我想可以吧。”

"Can I use your phone?" "___I ___suppose ___so."

“我们应该等他吗？”“我想是吧。”

"Should we wait for him?" "___I ___suppose ___so."