--Have you _ your debt?
---Yes, we worked day and night to _____.
| A．paid off, pay for them | B．paid for, pay them |
| C．paid, pay for them | D．paid for, pay them off |
Human beings are different from animals _______ 
they can use language as a tool to communicate.
| A．in that | B．for that | C．in which | D．for which |
______ is often the case with elder people, my grandma talked about my new hairstyle for at least 50 minutes nonstop.
| A．That | B．Which | C．As | D．It |
Come ______, everybody! Look at this _______, and you will find something terrific.
| A．closely; closely | B．close; close |
| C．closely; close | D．close; closely |
Eugene’s never willing to alter any of his opinions, so it’s no use ________ with him.
| A．to argue | B．arguing |
| C．argued | D．having argued |
Up till now we _______ four units and this will be the second time that we _______ a test.
| A．have finished; have had | B．finished; will have |
| C．have finished; are to have | D．will finish; have had |