______ it is to go for a picnic on such a fine day!
| A．What a fun | B．What fun | C．How fun | D．How a fun |
The boys followed the marks that they ________, until finally they found their way back to the campsite.
| A．left | B．have left | C．had left | D．have been left |
________ their heavy load, the two brothers walked along the river bank.
| A．Carrying | B．Carried | C．To carry | D．Carry |
Research shows that teenagers ________ talk about their day with family members at the dinner table are less likely to engage in high-risk behavior.
| A．what | B．who | C．whom | D．\ |
Jane had just finished her homework ________ her mom asked her to practice playing the violin yesterday.
| A．when | B．while | C．after | D．before |
________ from what she said at the meeting, she must have lied to all of us.
| A．Judged | B．Judging | C．To judge | D．Judge |