explanation with solutions greatly appreciated

OBJECTIVE: To get acquainted with basic MIPS instructions. Convert these MIPS instructions or pseudo-instructions to MIPS MARS hexadecimal machine code. Answers expressed in binary or decimal or octal will be wrong. Watch out for psuedo-code which may use more than one MIPS instruction to implement. ADDRESS Instruction Hexadecimal Machine Code 0x0040 0100 sub $10, $s3, Sao AGAIN: 0x00400104 addi Ss2, $s1,-5 Ox0040 0108 beg St5, SsO, OxF842 Ox0040 0100 jal Ox10410010 Ox0040 0110 xor St2, $55, Szero 0x0040 0114 lw $t0, 4($t1) Ox0040 0118 sub $t3, Sts, Sao NEXT: 0x0040 0110 LW, St5, $4,0 0x0040 0120 situ Sa2,5s1,$50 END: 0x0040 0124 BEQ, St8, Szero 1