習作U1
U1_04_A. Circle..mp3
U1_05_B. Fill in the blanks..mp3
U1_06_C. Choose..mp3
U1_07_D. Choose..mp3
U1_08_E. Choose..mp3
習作U2
U2_09_A. Check..mp3
U2_10_B. Fill in the blanks..mp3
U2_11_C. Choose..mp3
U2_12_D. Choose..mp3
U2_13_E. Choose..mp3
習作U3
U3_14_A. Check..mp3
U3_15_B. Fill in the blanks..mp3
U3_16_C. Choose..mp3
U3_17_D. Choose..mp3
U3_18_E. Choose..mp3
習作U4
U4_19_A. Circle..mp3
U4_20_B. Fill in the blanks..mp3
U4_21_C. Choose..mp3
U4_22_D. Choose..mp3
U4_23_E. Choose..mp3
習作U5
U5_24_A. Circle..mp3
U5_25_B. Circle..mp3
U5_26_C. Fill in the blanks..mp3
U5_27_D. Choose..mp3
U5_28_E. Check..mp3
U5_29_F. Choose..mp3
習作U6
U6_30_A. Circle..mp3
U6_31_B. Fill in the blanks..mp3
U6_32_C. Circle or cross..mp3
U6_33_D. Choose..mp3
U6_34_E. Choose..mp3
U6_35_F. Choose..mp3